Fix compiler warnings that are being turned into errors when
compiling with -Werror -Wall.
diff --git a/tcti/tcti_socket.cpp b/tcti/tcti_socket.cpp
index f4ce418..def4846 100644
--- a/tcti/tcti_socket.cpp
+++ b/tcti/tcti_socket.cpp
@@ -58,7 +58,7 @@
 {
     TSS2_RC result = 0;
     result = recvBytes( sock, data, len);
-    if (result == SOCKET_ERROR) {
+    if ( (INT32)result == SOCKET_ERROR) {
         TCTI_LOG( tctiContext, NO_PREFIX, "In recvBytes, recv failed (socket: 0x%x) with error: %d\n", sock, WSAGetLastError() );
         return TSS2_TCTI_RC_IO_ERROR;
     }