+ when storing the address in the cache fails, cleanup the resolved address

properly
+ delete trailing whitespace

lib/hostasyn.c

@@ -136,6 +136,9 @@ void Curl_addrinfo_callback(void *arg, /* "struct connectdata *" */
       dns = Curl_cache_addr(data, he,
                             conn->async.hostname,
                             conn->async.port);
+      if(!dns)
+        /* failed to store, cleanup and return error */
+        Curl_freeaddrinfo(he);
 
       if(data->share)
         Curl_share_unlock(data, CURL_LOCK_DATA_DNS);