Fix a few leaks

The interesting one is the notification macro, which was returning
directly on a soft-abort instead of going through the cleanup.

src/stash.c

@@ -702,9 +702,13 @@ int git_stash_apply_init_options(git_stash_apply_options *opts, unsigned int ver
 }
 
 #define NOTIFY_PROGRESS(opts, progress_type)				\
+	do {								\
 		if ((opts).progress_cb &&				\
-		(error = (opts).progress_cb((progress_type), (opts).progress_payload))) \
-		return (error < 0) ? error : -1;
+		    (error = (opts).progress_cb((progress_type), (opts).progress_payload))) { \
+			error = (error < 0) ? error : -1;		\
+			goto cleanup;					\
+		}							\
+	} while(false);
 
 int git_stash_apply(
 	git_repository *repo,

tests/stash/apply.c

@@ -44,6 +44,8 @@ void test_stash_apply__initialize(void)
 	assert_status(repo, "how", GIT_STATUS_CURRENT);
 	assert_status(repo, "who", GIT_STATUS_CURRENT);
 	assert_status(repo, "when", GIT_ENOTFOUND);
+
+	git_index_free(repo_index);
 }
 
 void test_stash_apply__cleanup(void)

tests/submodule/modify.c

@@ -257,4 +257,5 @@ void test_submodule_modify__save_last(void)
 
 	cl_git_pass(git_submodule_lookup(&sm, g_repo, "sm_gitmodules_only"));
 	cl_git_pass(git_submodule_save(sm));
+	git_submodule_free(sm);
 }