gdiplus/tests: make sure to use return values (LLVM/Clang)

[Austin English]

-- 
-Austin
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diff --git a/dlls/gdiplus/tests/image.c b/dlls/gdiplus/tests/image.c
index 989e0bb..6e62178 100644
--- a/dlls/gdiplus/tests/image.c
+++ b/dlls/gdiplus/tests/image.c
@@ -937,6 +937,7 @@ static void test_fromhicon(void)
        expect(Ok, stat);
        expect(ImageTypeBitmap, type);
        stat = GdipGetImagePixelFormat((GpImage*)bitmap, &format);
+       expect(Ok, stat);
        expect(PixelFormat32bppARGB, format);
        /* raw format */
        expect_rawformat(&ImageFormatMemoryBMP, (GpImage*)bitmap, __LINE__, FALSE);
@@ -973,6 +974,7 @@ static void test_fromhicon(void)
         expect(Ok, stat);
         expect(ImageTypeBitmap, type);
         stat = GdipGetImagePixelFormat((GpImage*)bitmap, &format);
+	expect(Ok, stat);
         expect(PixelFormat32bppARGB, format);
         /* raw format */
         expect_rawformat(&ImageFormatMemoryBMP, (GpImage*)bitmap, __LINE__, FALSE);