libkmod/hash: check for NULL before freeing hash

diff --git a/libkmod/libkmod-hash.c b/libkmod/libkmod-hash.c
index 8ca9cf41e2cb6729d97c7f19925b7ab8e88aad44..11dac669bfab0efbbf4e47af44eae5c36a5015dd 100644 (file)
--- a/libkmod/libkmod-hash.c
+++ b/libkmod/libkmod-hash.c
@@ -64,6 +64,10 @@ struct hash *hash_new(unsigned int n_buckets,
 void hash_free(struct hash *hash)
 {
        struct hash_bucket *bucket, *bucket_end;
+
+       if (hash == NULL)
+               return;
+
        bucket = hash->buckets;
        bucket_end = bucket + hash->n_buckets;
        for (; bucket < bucket_end; bucket++) {