curl_multi_add_handle: set timeouts in closure handles

The closure handle only ever has default timeouts set. To improve the
state somewhat we clone the timeouts from each added handle so that the
closure handle always has the same timeouts as the most recently added
easy handle.

Fixes #739

lib/multi.c

@@ -462,6 +462,14 @@ CURLMcode curl_multi_add_handle(struct Curl_multi *multi,
      handle is added */
   memset(&multi->timer_lastcall, 0, sizeof(multi->timer_lastcall));
 
+  /* The closure handle only ever has default timeouts set. To improve the
+     state somewhat we clone the timeouts from each added handle so that the
+     closure handle always has the same timeouts as the most recently added
+     easy handle. */
+  multi->closure_handle->set.timeout = data->set.timeout;
+  multi->closure_handle->set.server_response_timeout =
+    data->set.server_response_timeout;
+
   update_timer(multi);
   return CURLM_OK;
 }