gdiplus: Fix returned value of GdipDrawImagePointsRect according to native lib.

dlls/gdiplus/graphics.c

@@ -3049,7 +3049,7 @@ GpStatus WINGDIPAPI GdipDrawImagePointsRect(GpGraphics *graphics, GpImage *image
           count, srcx, srcy, srcwidth, srcheight, srcUnit, imageAttributes, callback,
           callbackData);
 
-    if (count > 3)
+    if (count == 4)
         return NotImplemented;
 
     if(!graphics || !image || !points || count != 3)
@@ -3421,7 +3421,10 @@ GpStatus WINGDIPAPI GdipDrawImagePointsRectI(GpGraphics *graphics, GpImage *imag
           srcx, srcy, srcwidth, srcheight, srcUnit, imageAttributes, callback,
           callbackData);
 
-    if(!points || count!=3)
+    if (count == 4)
+        return NotImplemented;
+
+    if (!points || count != 3)
         return InvalidParameter;
 
     for(i = 0; i < count; i++){

dlls/gdiplus/tests/graphics.c

@@ -1341,6 +1341,8 @@ static void test_GdipDrawImagePointsRect(void)
     ptf[3].Y = 10;
     status = GdipDrawImagePointsRect(graphics, (GpImage*)bm, ptf, 4, 0, 0, 10, 10, UnitPixel, NULL, NULL, NULL);
     expect(NotImplemented, status);
+    status = GdipDrawImagePointsRect(graphics, (GpImage*)bm, ptf, 5, 0, 0, 10, 10, UnitPixel, NULL, NULL, NULL);
+    expect(InvalidParameter, status);
     status = GdipDrawImagePointsRect(graphics, (GpImage*)bm, ptf, 2, 0, 0, 10, 10, UnitPixel, NULL, NULL, NULL);
     expect(InvalidParameter, status);
     status = GdipDrawImagePointsRect(graphics, (GpImage*)bm, ptf, 3, 0, 0, 10, 10, UnitPixel, NULL, NULL, NULL);