clay tests: free resources

Trees, indices and repos need to be freed

tests-clay/index/read_tree.c

@@ -34,6 +34,7 @@ void test_index_read_tree__read_write_involution(void)
 	/* read-tree */
 	git_tree_lookup(&tree, repo, &expected);
 	cl_git_pass(git_index_read_tree(index, tree));
+	git_tree_free(tree);
 
 	cl_git_pass(git_tree_create_fromindex(&tree_oid, index));
 	cl_assert(git_oid_cmp(&expected, &tree_oid) == 0);

tests-clay/object/tree/diff.c

@@ -45,6 +45,7 @@ void test_object_tree_diff__cleanup(void)
 {
 	git_tree_free(atree);
 	git_tree_free(btree);
+	git_index_free(theindex);
 	git_repository_free(repo);
 }
 

tests-clay/refs/crashes.c

@@ -12,4 +12,6 @@ void test_refs_crashes__double_free(void)
 	cl_git_pass(git_reference_delete(ref));
 	/* reference is gone from disk, so reloading it will fail */
 	cl_must_fail(git_reference_reload(ref2));
+
+	git_repository_free(repo);
 }