builtin/rerere: fix various trivial memory leaks

There are multiple trivial memory leaks in git-rerere(1). Fix those.

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

Author: pks-t

builtin/rerere.c

@@ -73,11 +73,17 @@ int cmd_rerere(int argc, const char **argv, const char *prefix)
 
 	if (!strcmp(argv[0], "forget")) {
 		struct pathspec pathspec;
+		int ret;
+
 		if (argc < 2)
 			warning(_("'git rerere forget' without paths is deprecated"));
 		parse_pathspec(&pathspec, 0, PATHSPEC_PREFER_CWD,
 			       prefix, argv + 1);
-		return rerere_forget(the_repository, &pathspec);
+
+		ret = rerere_forget(the_repository, &pathspec);
+
+		clear_pathspec(&pathspec);
+		return ret;
 	}
 
 	if (!strcmp(argv[0], "clear")) {

rerere.c

@@ -1107,7 +1107,7 @@ static int rerere_forget_one_path(struct index_state *istate,
 
 int rerere_forget(struct repository *r, struct pathspec *pathspec)
 {
-	int i, fd;
+	int i, fd, ret;
 	struct string_list conflict = STRING_LIST_INIT_DUP;
 	struct string_list merge_rr = STRING_LIST_INIT_DUP;
 
@@ -1132,7 +1132,12 @@ int rerere_forget(struct repository *r, struct pathspec *pathspec)
 			continue;
 		rerere_forget_one_path(r->index, it->string, &merge_rr);
 	}
-	return write_rr(&merge_rr, fd);
+
+	ret = write_rr(&merge_rr, fd);
+
+	string_list_clear(&conflict, 0);
+	string_list_clear(&merge_rr, 1);
+	return ret;
 }
 
 /*

t/t2030-unresolve-info.sh

@@ -5,6 +5,7 @@ test_description='undoing resolution'
 GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
 export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
 
+TEST_PASSES_SANITIZE_LEAK=true
 . ./test-lib.sh
 
 check_resolve_undo () {

t/t4200-rerere.sh

@@ -25,6 +25,7 @@ test_description='git rerere
 GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
 export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
 
+TEST_PASSES_SANITIZE_LEAK=true
 . ./test-lib.sh
 
 test_expect_success 'setup' '