extra null check for old startup handler. (#70)

1 files changed, 4 insertions, 2 deletions

diff --git a/suhosin.c b/suhosin.c
index b186fbb..8ce279d 100644
--- a/suhosin.c
+++ b/suhosin.c
@@ -211,7 +211,7 @@ static void suhosin_shutdown(zend_extension *extension)
 
 static int suhosin_startup_wrapper(zend_extension *ext)
 {
-        int res;
+        int res = SUCCESS;
         zend_extension *ex = &suhosin_zend_extension_entry;
         char *new_info;
         int new_info_length;
@@ -244,7 +244,9 @@ static int suhosin_startup_wrapper(zend_extension *ext)
             ze->op_array_dtor = stealth_op_array_dtor;
     /*}*/
         
-        res = old_startup(ext);
+        if (old_startup != NULL) {
+                res = old_startup(ext);
+        }
 
 /*    ex->name = NULL; 
     ex->author = NULL;