Avoid spewing giant debug backtrace into exception in certain OStatus subscription failure cases.

The code pattern 'new XXXException($e)' to chain exceptions doesn't actually work as intended, as exceptions are actually expecting a string message here.
This caused an implicit string conversion from HTTP_Request2_Exception, which is a PEAR_Exception, which defines an absurdly detailed __toString() method including a giant HTML table with a backtrace if you happen to be on a web request.
Simply passing $e->getMessage() instead clears this up, as we'll get the nice short message like 'Couldn't connect to tcp://blahblah:80'

1 files changed, 1 insertions, 1 deletions

diff --git a/plugins/OStatus/lib/feeddiscovery.php b/plugins/OStatus/lib/feeddiscovery.php
index 4809f9d35..4ac243832 100644
--- a/plugins/OStatus/lib/feeddiscovery.php
+++ b/plugins/OStatus/lib/feeddiscovery.php
@@ -104,7 +104,7 @@ class FeedDiscovery
             $response = $client->get($url);
         } catch (HTTP_Request2_Exception $e) {
             common_log(LOG_ERR, __METHOD__ . " Failure for $url - " . $e->getMessage());
-            throw new FeedSubBadURLException($e);
+            throw new FeedSubBadURLException($e->getMessage());
         }
 
         if ($htmlOk) {