Merge pull request #4797 from bisho/patch-2

Prevent heap-buffer-overflow

src/odb_pack.c

@@ -210,7 +210,7 @@ static int packfile_load__cb(void *data, git_buf *path)
 	for (i = 0; i < backend->packs.length; ++i) {
 		struct git_pack_file *p = git_vector_get(&backend->packs, i);
 
-		if (memcmp(p->pack_name, path_str, cmp_len) == 0)
+		if (strncmp(p->pack_name, path_str, cmp_len) == 0)
 			return 0;
 	}