Fix typo. Thanks to Jack Jansen for spotting it.

Modules/socketmodule.c

@@ -622,7 +622,7 @@ setipaddr(char* name, struct sockaddr * addr_ret, int af)
 	memset(&hints, 0, sizeof(hints));
 	hints.ai_family = af;
 	error = getaddrinfo(name, NULL, &hints, &res);
-        if (error = EAI_NONAME && af == AF_UNSPEC) {
+        if (error == EAI_NONAME && af == AF_UNSPEC) {
           /* On OSF/1 V5.1, numeric-to-addr conversion
              fails if no address family is given. Assume IPv4 for now.*/
           hints.ai_family = AF_INET;