gdiplus/tests: Add some missing return value checks (Coverity).

dlls/gdiplus/tests/font.c

@@ -159,7 +159,8 @@ static void test_createfont(void)
         expect(Ok, stat);
         GdipGetFontSize (font, &size);
         ok (size == 24, "Expected 24, got %f (with unit: %d)\n", size, i);
-        GdipGetFontUnit (font, &unit);
+        stat = GdipGetFontUnit (font, &unit);
+        ok (stat == Ok, "Failed to get font unit, %d.\n", stat);
         expect (i, unit);
         GdipDeleteFont(font);
     }

dlls/gdiplus/tests/graphics.c

@@ -347,7 +347,8 @@ static void test_save_restore(void)
     log_state(state_a, &state_log);
 
     /* A state created by BeginContainer cannot be restored with RestoreGraphics. */
-    GdipCreateFromHDC(hdc, &graphics1);
+    stat = GdipCreateFromHDC(hdc, &graphics1);
+    expect(Ok, stat);
     GdipSetInterpolationMode(graphics1, InterpolationModeBilinear);
     stat = GdipBeginContainer2(graphics1, &state_a);
     expect(Ok, stat);
@@ -703,7 +704,8 @@ static void test_BeginContainer2(void)
     GdipGetTextContrast(graphics, &contrast);
     ok(defContrast == contrast, "Expected Text Contrast to be restored to %d, got %d\n", defContrast, contrast);
 
-    GdipGetTextRenderingHint(graphics, &texthint);
+    status = GdipGetTextRenderingHint(graphics, &texthint);
+    expect(Ok, status);
     ok(defTexthint == texthint, "Expected Text Hint to be restored to %d, got %d\n", defTexthint, texthint);
 
     /* test world transform */
@@ -722,7 +724,8 @@ static void test_BeginContainer2(void)
 
     status = GdipCreateMatrix2(10, 20, 30, 40, 50, 60, &transform);
     expect(Ok, status);
-    GdipSetWorldTransform(graphics, transform);
+    status = GdipSetWorldTransform(graphics, transform);
+    expect(Ok, status);
     GdipDeleteMatrix(transform);
     transform = NULL;
 
@@ -731,7 +734,8 @@ static void test_BeginContainer2(void)
 
     status = GdipCreateMatrix(&transform);
     expect(Ok, status);
-    GdipGetWorldTransform(graphics, transform);
+    status = GdipGetWorldTransform(graphics, transform);
+    expect(Ok, status);
     status = GdipGetMatrixElements(transform, elems);
     expect(Ok, status);
     ok(fabs(defTrans[0] - elems[0]) < 0.0001 &&
@@ -753,12 +757,14 @@ static void test_BeginContainer2(void)
     status = GdipBeginContainer2(graphics, &cont1);
     expect(Ok, status);
 
-    GdipSetClipRect(graphics, defClip[0], defClip[1], defClip[2], defClip[3], CombineModeReplace);
+    status = GdipSetClipRect(graphics, defClip[0], defClip[1], defClip[2], defClip[3], CombineModeReplace);
+    expect(Ok, status);
 
     status = GdipBeginContainer2(graphics, &cont2);
     expect(Ok, status);
 
-    GdipSetClipRect(graphics, 2, 4, 6, 8, CombineModeReplace);
+    status = GdipSetClipRect(graphics, 2, 4, 6, 8, CombineModeReplace);
+    expect(Ok, status);
 
     status = GdipEndContainer(graphics, cont2);
     expect(Ok, status);
@@ -6572,12 +6578,18 @@ static void test_GdipFillRectanglesOnBitmapTextureBrush(void)
     GdipDeleteBrush((GpBrush*)brush);
     GdipDeleteGraphics(graphics);
 
-    GdipBitmapGetPixel(dst_img.bitmap, 0, 0, &color[0]);
-    GdipBitmapGetPixel(dst_img.bitmap, 0, 1, &color[1]);
-    GdipBitmapGetPixel(dst_img.bitmap, 1, 0, &color[2]);
-    GdipBitmapGetPixel(dst_img.bitmap, width/2, 0, &color[3]);
-    GdipBitmapGetPixel(dst_img.bitmap, width/2, height/2, &color[4]);
-    GdipBitmapGetPixel(dst_img.bitmap, 0, height/2, &color[5]);
+    status = GdipBitmapGetPixel(dst_img.bitmap, 0, 0, &color[0]);
+    expect(Ok, status);
+    status = GdipBitmapGetPixel(dst_img.bitmap, 0, 1, &color[1]);
+    expect(Ok, status);
+    status = GdipBitmapGetPixel(dst_img.bitmap, 1, 0, &color[2]);
+    expect(Ok, status);
+    status = GdipBitmapGetPixel(dst_img.bitmap, width/2, 0, &color[3]);
+    expect(Ok, status);
+    status = GdipBitmapGetPixel(dst_img.bitmap, width/2, height/2, &color[4]);
+    expect(Ok, status);
+    status = GdipBitmapGetPixel(dst_img.bitmap, 0, height/2, &color[5]);
+    expect(Ok, status);
 
     ok(is_blue_color(color[0]) && is_blue_color(color[1]) && is_blue_color(color[2]) &&
        color[3] == 0 && color[4] == 0 && color[5] == 0,

dlls/gdiplus/tests/image.c

@@ -2717,7 +2717,7 @@ static void test_multiframegif(void)
     expect(Ok, stat);
 
     color = 0xdeadbeef;
-    GdipBitmapGetPixel(bmp, 0, 0, &color);
+    stat = GdipBitmapGetPixel(bmp, 0, 0, &color);
     expect(Ok, stat);
     expect(0xff000000, color);
 

dlls/gdiplus/tests/region.c

@@ -814,7 +814,8 @@ static void test_isinfinite(void)
 
     status = GdipCreateFromHDC(hdc, &graphics);
     expect(Ok, status);
-    GdipCreateRegion(&region);
+    status = GdipCreateRegion(&region);
+    expect(Ok, status);
 
     GdipCreateMatrix2(3.0, 0.0, 0.0, 1.0, 20.0, 30.0, &m);
 
@@ -860,7 +861,8 @@ static void test_isempty(void)
 
     status = GdipCreateFromHDC(hdc, &graphics);
     expect(Ok, status);
-    GdipCreateRegion(&region);
+    status = GdipCreateRegion(&region);
+    expect(Ok, status);
 
     /* NULL arguments */
     status = GdipIsEmptyRegion(NULL, NULL, NULL);
@@ -1779,7 +1781,8 @@ static void test_getbounds(void)
     ok(rectf.Height == 100.0, "Expected height = 0.0, got %.2f\n", rectf.Height);
 
     /* the world and page transforms are ignored */
-    GdipScaleWorldTransform(graphics, 2.0, 2.0, MatrixOrderPrepend);
+    status = GdipScaleWorldTransform(graphics, 2.0, 2.0, MatrixOrderPrepend);
+    ok(status == Ok, "status %08x\n", status);
     GdipSetPageUnit(graphics, UnitInch);
     GdipSetPageScale(graphics, 2.0);
     status = GdipGetRegionBounds(region, graphics, &rectf);