opkg: fix the crashing issue.

      It's a hanging pointer.
      Using installed_files without get and free



git-svn-id: http://opkg.googlecode.com/svn/trunk@144 e8e0d7a0-c8d9-11dd-a880-a1081c7ac358

1 files changed, 9 insertions, 0 deletions

diff --git a/libopkg/void_list.c b/libopkg/void_list.c
index f749016..8d61fbb 100644
--- a/libopkg/void_list.c
+++ b/libopkg/void_list.c
@@ -160,6 +160,15 @@ void *void_list_remove_elt(void_list_t *list, const void *target_data, void_list
      void_list_elt_t *old_elt = NULL;
      void *old_data = NULL;
 
+     if (!list) {
+          fprintf(stderr, "Error: void_list_remove_elt list is NULL\n");
+          return NULL;
+     }
+     if (!target_data) {
+          fprintf(stderr, "Error: void_list_remove_elt target_data is NULL\n");
+	  return NULL;
+     }
+
      /* first element */
      if (list->head && list->head->data && (cmp(list->head->data, target_data) == 0)) {
 	  old_elt = list->head;