Fix SIGSEGV if user passes invalid file to "-jar"

Signed-off-by: Pekka Enberg <penberg@kernel.org>

1 files changed, 6 insertions, 2 deletions

diff --git a/lib/zip.c b/lib/zip.c
index ee67c5e5..6e31ecf1 100644
--- a/lib/zip.c
+++ b/lib/zip.c
@@ -128,8 +128,12 @@ static void zip_delete(struct zip *zip)
 		free(entry->filename);
 	}
 
-	free_hash_map(zip->entry_cache);
-	free_hash_map(zip->class_cache);
+	if (zip->entry_cache)
+		free_hash_map(zip->entry_cache);
+
+	if (zip->class_cache)
+		free_hash_map(zip->class_cache);
+
 	free(zip->entries);
 	free(zip);
 }