fix expression bug on socket creation failure (fd<0 is always false because fd is unsigned and Windows returns ~0 (-1) on socket failure)

test/core/util/port_windows.c

@@ -57,7 +57,7 @@ static int is_port_available(int *port, int is_tcp) {
 
   GPR_ASSERT(*port >= 0);
   GPR_ASSERT(*port <= 65535);
-  if (fd < 0) {
+  if (INVALID_SOCKET == fd) {
     gpr_log(GPR_ERROR, "socket() failed: %s", strerror(errno));
     return 0;
   }

vsprojects/grpc_test_util/grpc_test_util.vcxproj

@@ -146,14 +146,14 @@
     </Link>
   </ItemDefinitionGroup>
   <ItemGroup>
-    <ClCompile Include="..\..\test\core\end2end\cq_verifier.c">
-    </ClCompile>
     <ClCompile Include="..\..\test\core\end2end\data\server1_cert.c">
     </ClCompile>
     <ClCompile Include="..\..\test\core\end2end\data\server1_key.c">
     </ClCompile>
     <ClCompile Include="..\..\test\core\end2end\data\test_root_cert.c">
     </ClCompile>
+    <ClCompile Include="..\..\test\core\end2end\cq_verifier.c">
+    </ClCompile>
     <ClCompile Include="..\..\test\core\iomgr\endpoint_tests.c">
     </ClCompile>
     <ClCompile Include="..\..\test\core\statistics\census_log_tests.c">