type casts to make gtest happy

src/sso/test/sso_unittest.cc

@@ -13,8 +13,8 @@ TEST(Base64, EncodeOk) {
   char out[128] = {0};
   size_t sz = sizeof(out);
   EXPECT_EQ(0, sso_base64_encode((unsigned char *)out, &sz, (unsigned char *)in, (size_t)strlen(in)));
-  EXPECT_EQ(8, sso_base64_encode_size((size_t)strlen(in)));
-  EXPECT_EQ(8, sz);
+  EXPECT_EQ(8, int(sso_base64_encode_size((size_t)strlen(in))));
+  EXPECT_EQ(8, int(sz));
   EXPECT_EQ("dGVzdHM=", std::string(out));
 }
 
@@ -23,7 +23,7 @@ TEST(Base64, DecodeOk) {
   char out[128] = {0};
   size_t sz = sizeof(out);
   EXPECT_EQ(0, sso_base64_decode((unsigned char*)out, &sz, (unsigned char *)in, (size_t)strlen(in)));
-  EXPECT_EQ(5, sz);
+  EXPECT_EQ(5, int(sz));
   EXPECT_EQ("tests", std::string(out));
 }