[TwitterBridge] Fix issue #1621 @<twitter_user> failed with error 429

[arnd-s]

Fix for #1621

[triatic]

Works for me.

Maintainer note: please merge #1623 alongside this one.

[em92]

Also suggesting this patch on this PR. Without this patch bridge will return misleading 429 error (too many requests), when guest token is suddenly not parsed.

diff --git a/bridges/TwitterBridge.php b/bridges/TwitterBridge.php
index 7afa395..eba1576 100644
--- a/bridges/TwitterBridge.php
+++ b/bridges/TwitterBridge.php
@@ -420,6 +420,7 @@ EOD;
 
                $guestTokenRegex = '/gt=([0-9]*)/m';
                preg_match_all($guestTokenRegex, $pageContent['header'], $guestTokenMatches, PREG_SET_ORDER, 0);
+               if (!$guestTokenMatches) returnServerError("Could not parse guest token");
                $guestToken = $guestTokenMatches[0][1];
                return $guestToken;
        }