[Piglit] [PATCH] ext_transform_feedback-alignment: Fix undefined multiplication.

[Vinson Lee]

This patch fixes this GCC aggressive-loop-optimizations warning.

alignment.c: In function 'piglit_display':
alignment.c:184:28: warning: iteration 32u invokes undefined behavior [-Waggressive-loop-optimizations]
    0x00010203 + 0x04040404 * i;
                            ^
alignment.c:182:2: note: containing loop
  for (i = 0; i < EXPECTED_NUM_OUTPUTS; ++i) {
  ^

Signed-off-by: Vinson Lee <vlee at freedesktop.org>
---
 tests/spec/ext_transform_feedback/alignment.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tests/spec/ext_transform_feedback/alignment.c b/tests/spec/ext_transform_feedback/alignment.c
index dda8823..5014066 100644
--- a/tests/spec/ext_transform_feedback/alignment.c
+++ b/tests/spec/ext_transform_feedback/alignment.c
@@ -151,7 +151,7 @@ enum piglit_result piglit_display(void)
 	GLuint *readback;
 	GLuint buffer[BUFFER_SIZE];
 	GLuint expected[BUFFER_SIZE];
-	int i;
+	unsigned int i;
 	GLboolean pass = GL_TRUE;
 
 	glUseProgram(prog);
-- 
1.8.5.3