Fix bug #62129 - rfc1867 crashes php even though turned off

Patch by gxd305 at gmail dot com

Author: arraypad

NEWS

@@ -75,6 +75,8 @@ PHP                                                                        NEWS
     should warning). (Yasuo)
   . Fixed bug #49175 (mod_files.sh does not support hash bits). Patch by
     oorza2k5 at gmail dot com (Yasuo)
+  . Fixed bug #62129 (rfc1867 crashes php even though turned off). (gxd305 at
+    gmail dot com)
 
 - Sockets:
   . Implemented FR #63472 (Setting SO_BINDTODEVICE with socket_set_option). 

ext/session/session.c

@@ -2246,8 +2246,11 @@ static PHP_MSHUTDOWN_FUNCTION(session) /* {{{ */
 	PHP_MSHUTDOWN(ps_mm) (SHUTDOWN_FUNC_ARGS_PASSTHRU);
 #endif
 
-	/* restore the orig callback */
-	php_rfc1867_callback = php_session_rfc1867_orig_callback;
+	/* reset rfc1867 callbacks */
+	php_session_rfc1867_orig_callback = NULL;
+	if (php_rfc1867_callback == php_session_rfc1867_callback) {
+		php_rfc1867_callback = NULL;
+	}
 
 	ps_serializers[PREDEFINED_SERIALIZERS].name = NULL;
 	memset(&ps_modules[PREDEFINED_MODULES], 0, (MAX_MODULES-PREDEFINED_MODULES)*sizeof(ps_module *));