t/test-repository: fix leaking repository

The test-repository test helper zeroes out `the_repository` such that it
can be sure that our codebase only ends up using the supplied repository
that we initialize in the respective helper functions. This does cause
memory leaks though as the data that `the_repository` has been holding
onto is not referenced anymore.

Fix this by calling `repo_clear()` instead.

Signed-off-by: Patrick Steinhardt <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: pks-t

t/helper/test-repository.c

@@ -19,7 +19,7 @@ static void test_parse_commit_in_graph(const char *gitdir, const char *worktree,
 
 	setup_git_env(gitdir);
 
-	memset(the_repository, 0, sizeof(*the_repository));
+	repo_clear(the_repository);
 
 	if (repo_init(&r, gitdir, worktree))
 		die("Couldn't init repo");
@@ -49,7 +49,7 @@ static void test_get_commit_tree_in_graph(const char *gitdir,
 
 	setup_git_env(gitdir);
 
-	memset(the_repository, 0, sizeof(*the_repository));
+	repo_clear(the_repository);
 
 	if (repo_init(&r, gitdir, worktree))
 		die("Couldn't init repo");

t/t5318-commit-graph.sh

@@ -1,6 +1,8 @@
 #!/bin/sh
 
 test_description='commit graph'
+
+TEST_PASSES_SANITIZE_LEAK=true
 . ./test-lib.sh
 . "$TEST_DIRECTORY"/lib-chunk.sh