still more upgrade logging fixes

diff --git a/lib/adminlib.php b/lib/adminlib.php
index c3208bc4288b5771976a043a85b8e0ee57d2853a..2d3a2223e68097e2a1e16da1fc83c563b5b4b75e 100644 (file)
--- a/lib/adminlib.php
+++ b/lib/adminlib.php
@@ -466,9 +466,11 @@ function upgrade_log_finish() {
     @ob_end_flush();
     if ($upgradelogbuffer !== '') {
         @fwrite($upgradeloghandle, $upgradelogbuffer);
+        $upgradelogbuffer = '';
     }
     if ($upgradeloghandle and ($upgradeloghandle !== 'error')) {
         @fclose($upgradeloghandle);
+        $upgradeloghandle = false;
     }
     @session_start();                // ignore header errors, we only need to reopen session
     $_SESSION['upgraderunning'] = 0; // clear upgrade indicator