fix crash bug (Doug MacEachern, dougm@covalent.net)

diff --git a/sapi/apache2filter/sapi_apache2.c b/sapi/apache2filter/sapi_apache2.c
index d50c078417f536d592e0fda8d25f71738cfd8cc6..9d76e13245814952041adb21ac5fc1112d0adafc 100644 (file)
--- a/sapi/apache2filter/sapi_apache2.c
+++ b/sapi/apache2filter/sapi_apache2.c
@@ -163,6 +163,9 @@ php_apache_sapi_flush(void *server_context)
        apr_bucket_brigade *bb;
        apr_bucket *b;
 
+    if (!server_context)
+        return;
+    
        /* Send a flush bucket down the filter chain. The current default
         * handler seems to act on the first flush bucket, but ignores
         * all further flush buckets.