Fix compile warning.
warning: comparison between signed and unsigned integer expressions.
Change-Id: Ib6ee7500fe910983f290fc321ad89c0ab9989455
diff --git a/test/convolve_test.cc b/test/convolve_test.cc
index 99bdf82..de947aa 100644
--- a/test/convolve_test.cc
+++ b/test/convolve_test.cc
@@ -22,7 +22,7 @@
namespace {
-static const int kMaxDimension = 64;
+static const unsigned int kMaxDimension = 64;
typedef void (*ConvolveFunc)(const uint8_t *src, ptrdiff_t src_stride,
uint8_t *dst, ptrdiff_t dst_stride,