[RFC PATCH 2/5] various: add missing strvec_clear()

["Ævar Arnfjörð Bjarmason" <avarab@gmail.com>]

Fix or partially fix memory leaks that happened because a
strvec_clear() was missing. The "partially" will be addressed in a
subsequent commit, we'll still leak in cases where the function we're
calling munges our "v" member.

In the case of "builtin/describe.c" let's change it to use the macro
initializer rather than the strvec_init() while we're at it.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
---
 builtin/annotate.c       | 5 ++++-
 builtin/describe.c       | 8 +++++---
 builtin/stash.c          | 6 +++++-
 builtin/upload-archive.c | 7 +++++--
 4 files changed, 19 insertions(+), 7 deletions(-)

diff --git a/builtin/annotate.c b/builtin/annotate.c
index e37b269196f..de58deadfc7 100644
--- a/builtin/annotate.c
+++ b/builtin/annotate.c
@@ -10,9 +10,12 @@
 int cmd_annotate(int argc UNUSED, const char **argv, const char *prefix)
 {
 	struct strvec args = STRVEC_INIT;
+	int ret;
 
 	strvec_pushl(&args, argv[0], "-c", NULL);
 	strvec_pushv(&args, &argv[1]);
 
-	return cmd_blame(args.nr, args.v, prefix);
+	ret = cmd_blame(args.nr, args.v, prefix);
+	strvec_clear(&args);
+	return ret;
 }
diff --git a/builtin/describe.c b/builtin/describe.c
index eea1e330c00..cb205f6b561 100644
--- a/builtin/describe.c
+++ b/builtin/describe.c
@@ -597,9 +597,9 @@ int cmd_describe(int argc, const char **argv, const char *prefix)
 
 	if (contains) {
 		struct string_list_item *item;
-		struct strvec args;
+		struct strvec args = STRVEC_INIT;
+		int ret;
 
-		strvec_init(&args);
 		strvec_pushl(&args, "name-rev",
 			     "--peel-tag", "--name-only", "--no-undefined",
 			     NULL);
@@ -616,7 +616,9 @@ int cmd_describe(int argc, const char **argv, const char *prefix)
 			strvec_pushv(&args, argv);
 		else
 			strvec_push(&args, "HEAD");
-		return cmd_name_rev(args.nr, args.v, prefix);
+		ret = cmd_name_rev(args.nr, args.v, prefix);
+		strvec_clear(&args);
+		return ret;
 	}
 
 	hashmap_init(&names, commit_name_neq, NULL, 0);
diff --git a/builtin/stash.c b/builtin/stash.c
index bb0fd861434..e504e22e0b9 100644
--- a/builtin/stash.c
+++ b/builtin/stash.c
@@ -961,6 +961,7 @@ static int show_stash(int argc, const char **argv, const char *prefix)
 	ret = diff_result_code(&rev.diffopt, 0);
 cleanup:
 	strvec_clear(&stash_args);
+	strvec_clear(&revision_args);
 	free_stash_info(&info);
 	release_revisions(&rev);
 	if (do_usage)
@@ -1838,6 +1839,7 @@ int cmd_stash(int argc, const char **argv, const char *prefix)
 		OPT_SUBCOMMAND_F("save", &fn, save_stash, PARSE_OPT_NOCOMPLETE),
 		OPT_END()
 	};
+	int ret;
 
 	git_config(git_stash_config, NULL);
 
@@ -1861,5 +1863,7 @@ int cmd_stash(int argc, const char **argv, const char *prefix)
 	/* Assume 'stash push' */
 	strvec_push(&args, "push");
 	strvec_pushv(&args, argv);
-	return !!push_stash(args.nr, args.v, prefix, 1);
+	ret = !!push_stash(args.nr, args.v, prefix, 1);
+	strvec_clear(&args);
+	return ret;
 }
diff --git a/builtin/upload-archive.c b/builtin/upload-archive.c
index 945ee2b4126..6ef0d06ee8b 100644
--- a/builtin/upload-archive.c
+++ b/builtin/upload-archive.c
@@ -21,6 +21,7 @@ int cmd_upload_archive_writer(int argc, const char **argv, const char *prefix)
 {
 	struct strvec sent_argv = STRVEC_INIT;
 	const char *arg_cmd = "argument ";
+	int ret;
 
 	if (argc != 2 || !strcmp(argv[1], "-h"))
 		usage(upload_archive_usage);
@@ -45,8 +46,10 @@ int cmd_upload_archive_writer(int argc, const char **argv, const char *prefix)
 	}
 
 	/* parse all options sent by the client */
-	return write_archive(sent_argv.nr, sent_argv.v, prefix,
-			     the_repository, NULL, 1);
+	ret = write_archive(sent_argv.nr, sent_argv.v, prefix,
+			    the_repository, NULL, 1);
+	strvec_clear(&sent_argv);
+	return ret;
 }
 
 __attribute__((format (printf, 1, 2)))
-- 
2.39.0.rc2.1048.g0e5493b8d5b