Fix logic in gethostbyname_r (bug #1634)

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@2966 65c4cc65-6c06-0410-ace0-fbb531ad65f3

utils.c

@@ -111,7 +111,7 @@ int gethostbyname_r (const char *name, struct hostent *ret, char *buf,
 	h_errno = hsave;  /* restore h_errno */
 	ast_mutex_unlock(&__mutex); /* end critical area */
 
-	return (*result != NULL);
+	return (*result == NULL); /* return 0 on success, non-zero on error */
 }