gdiplus/tests: Add GIF to image properties tests.

dlls/gdiplus/tests/image.c

@@ -3676,6 +3676,7 @@ static void test_image_properties(void)
         { jpgimage, sizeof(jpgimage), ImageTypeBitmap, 2, ~0, 128, ~0, 0x5090, 0x5091, 12 },
         { tiffimage, sizeof(tiffimage), ImageTypeBitmap, 16, ~0, 4, ~0, 0xfe, ~0, 12 },
         { bmpimage, sizeof(bmpimage), ImageTypeBitmap, 0, ~0, 0, ~0, 0, ~0, 16 },
+        { gifimage, sizeof(gifimage), ImageTypeBitmap, 1, 4, 4, ~0, 0x5100, ~0, 16 },
         { wmfimage, sizeof(wmfimage), ImageTypeMetafile, 0, ~0, 0, ~0, 0, ~0, -GenericError }
     };
     GpStatus status;
@@ -3721,7 +3722,7 @@ static void test_image_properties(void)
 
         status = GdipGetPropertyCount(image, &prop_count);
         ok(status == Ok, "%u: GdipGetPropertyCount error %d\n", i, status);
-        todo_wine_if(td[i].image_data == pngimage || td[i].image_data == jpgimage)
+        todo_wine_if(td[i].image_data == pngimage || td[i].image_data == jpgimage || td[i].image_data == gifimage)
         ok(td[i].prop_count == prop_count || (td[i].prop_count2 != ~0 && td[i].prop_count2 == prop_count),
            " %u: expected property count %u or %u, got %u\n",
            i, td[i].prop_count, td[i].prop_count2, prop_count);