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-rw-r--r--includes/module.inc3
1 files changed, 2 insertions, 1 deletions
diff --git a/includes/module.inc b/includes/module.inc
index b5453b800..030bdeea2 100644
--- a/includes/module.inc
+++ b/includes/module.inc
@@ -27,7 +27,8 @@ function module_invoke_all($hook, $a1 = NULL, $a2 = NULL, $a3 = NULL, $a4 = NULL
$return = array();
foreach (module_list() as $name) {
if (module_hook($name, $hook)) {
- if ($result = module_invoke($name, $hook, $a1, $a2, $a3, $a4)) {
+ $result = module_invoke($name, $hook, $a1, $a2, $a3, $a4);
+ if (isset($result)) {
$return = array_merge($return, $result);
}
}