php#53: * Fix Windows socket validation in network streams

         Replace `clisock >= 0` comparisons with `ZEND_VALID_SOCKET(clisock)`
         to properly handle Windows SOCKET type (unsigned int) where
         INVALID_SOCKET = ~0.

         Files modified:
         - main/streams/xp_socket.c:973
         - ext/openssl/xp_ssl.c:2266

Author: EdmondDantes

ext/openssl/xp_ssl.c

@@ -2263,7 +2263,7 @@ static inline int php_openssl_tcp_sockop_accept(php_stream *stream, php_openssl_
 			nodelay);
 	}
 
-	if (clisock >= 0) {
+	if (ZEND_VALID_SOCKET(clisock)) {
 		php_openssl_netstream_data_t *clisockdata = (php_openssl_netstream_data_t*) emalloc(sizeof(*clisockdata));
 
 		/* copy underlying tcp fields */

main/streams/xp_socket.c

@@ -970,7 +970,7 @@ static inline int php_tcp_sockop_accept(php_stream *stream, php_netstream_data_t
 			nodelay);
 	}
 
-	if (clisock >= 0) {
+	if (ZEND_VALID_SOCKET(clisock)) {
 		php_netstream_data_t *clisockdata = (php_netstream_data_t*) emalloc(sizeof(*clisockdata));
 
 		memcpy(clisockdata, sock, sizeof(*clisockdata));