Alpm, check for NULL in free-functions

Also, use FREE() instead of free() in _alpm_backup_free()
to set the pointers to NULL.

Signed-off-by: Rikard Falkeborn <rikard.falkeborn@gmail.com>
Signed-off-by: Allan McRae <allan@archlinux.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/lib/libalpm/conflict.c b/lib/libalpm/conflict.c
index 0af3e3a8..41b8393c 100644
--- a/lib/libalpm/conflict.c
+++ b/lib/libalpm/conflict.c
@@ -68,6 +68,7 @@ error:
  */
 void SYMEXPORT alpm_conflict_free(alpm_conflict_t *conflict)
 {
+	ASSERT(conflict != NULL, return);
 	FREE(conflict->package2);
 	FREE(conflict->package1);
 	FREE(conflict);
@@ -301,6 +302,7 @@ error:
  */
 void SYMEXPORT alpm_fileconflict_free(alpm_fileconflict_t *conflict)
 {
+	ASSERT(conflict != NULL, return);
 	FREE(conflict->ctarget);
 	FREE(conflict->file);
 	FREE(conflict->target);