Merge branch 'po/http-push-error-message'

Debugging aid.

* po/http-push-error-message:
  http-push: improve error log

http-push.c

@@ -915,6 +915,10 @@ static struct remote_lock *lock_remote(const char *path, long timeout)
 				lock->timeout = -1;
 			}
 			XML_ParserFree(parser);
+		} else {
+			fprintf(stderr,
+				"error: curl result=%d, HTTP code=%ld\n",
+				results.curl_result, results.http_code);
 		}
 	} else {
 		fprintf(stderr, "Unable to start LOCK request\n");