qmerge: Protect against NULL ptr

hash will be NULL if file does not exist.

Signed-off-by: Joakim Tjernlund <joakim.tjernlund@infinera.com>
Signed-off-by: Fabian Groffen <grobian@gentoo.org>

1 files changed, 3 insertions, 1 deletions

diff --git a/qmerge.c b/qmerge.c
index 2e8730e1..7b42956d 100644
--- a/qmerge.c
+++ b/qmerge.c
@@ -1513,7 +1513,9 @@ pkg_unmerge(tree_pkg_ctx *pkg_ctx, set *keep,
 					/* If the file wasn't modified, unmerge it */
 					char *hash = hash_file_at(portroot_fd,
 							e->name + 1, HASH_MD5);
-					protected = strcmp(e->digest, (const char *)hash);
+					protected = 0;
+					if (hash)
+						protected = strcmp(e->digest, (const char *)hash);
 				}
 				break;