Fix a couple sign-comparison warnings.
Bug: http://b/26523949
Change-Id: Id33146b5544147945fee3f14f7f72f39bae449f6
diff --git a/base/utf8_test.cpp b/base/utf8_test.cpp
index dde7490..ae8fc8c 100755
--- a/base/utf8_test.cpp
+++ b/base/utf8_test.cpp
@@ -44,7 +44,7 @@
// specific replacement character that UTF8ToWide() may replace the invalid
// UTF-8 characters with because we want to allow that to change if the
// implementation changes.
- EXPECT_EQ(0, wide.find(L"before"));
+ EXPECT_EQ(0U, wide.find(L"before"));
const wchar_t after_wide[] = L"after";
EXPECT_EQ(wide.length() - (arraysize(after_wide) - 1), wide.find(after_wide));
}