[PATCH] builtin/: add UNLEAKs

["Martin Ågren" <martin.agren@gmail.com>]

Add some UNLEAKs where we are about to return from `cmd_*`. UNLEAK the
variables in the same order as we've declared them. While addressing
`msg` in builtin/tag.c, convert the existing `strbuf_release()` calls as
well.

Signed-off-by: Martin Ågren <martin.agren@gmail.com>
---
 builtin/checkout.c   | 1 +
 builtin/diff-index.c | 1 +
 builtin/diff.c       | 3 +++
 builtin/name-rev.c   | 1 +
 builtin/tag.c        | 9 +++++----
 5 files changed, 11 insertions(+), 4 deletions(-)

diff --git a/builtin/checkout.c b/builtin/checkout.c
index 3345a0d16..2daa4412a 100644
--- a/builtin/checkout.c
+++ b/builtin/checkout.c
@@ -1298,6 +1298,7 @@ int cmd_checkout(int argc, const char **argv, const char *prefix)
 		strbuf_release(&buf);
 	}
 
+	UNLEAK(opts);
 	if (opts.patch_mode || opts.pathspec.nr)
 		return checkout_paths(&opts, new.name);
 	else
diff --git a/builtin/diff-index.c b/builtin/diff-index.c
index 9d772f8f2..522f4fdff 100644
--- a/builtin/diff-index.c
+++ b/builtin/diff-index.c
@@ -56,5 +56,6 @@ int cmd_diff_index(int argc, const char **argv, const char *prefix)
 		return -1;
 	}
 	result = run_diff_index(&rev, cached);
+	UNLEAK(rev);
 	return diff_result_code(&rev.diffopt, result);
 }
diff --git a/builtin/diff.c b/builtin/diff.c
index 7e3ebcea3..f5bbd4d75 100644
--- a/builtin/diff.c
+++ b/builtin/diff.c
@@ -464,5 +464,8 @@ int cmd_diff(int argc, const char **argv, const char *prefix)
 	result = diff_result_code(&rev.diffopt, result);
 	if (1 < rev.diffopt.skip_stat_unmatch)
 		refresh_index_quietly();
+	UNLEAK(rev);
+	UNLEAK(ent);
+	UNLEAK(blob);
 	return result;
 }
diff --git a/builtin/name-rev.c b/builtin/name-rev.c
index 598da6c8b..9e088ebd1 100644
--- a/builtin/name-rev.c
+++ b/builtin/name-rev.c
@@ -494,5 +494,6 @@ int cmd_name_rev(int argc, const char **argv, const char *prefix)
 				  always, allow_undefined, data.name_only);
 	}
 
+	UNLEAK(revs);
 	return 0;
 }
diff --git a/builtin/tag.c b/builtin/tag.c
index c62779418..34efba579 100644
--- a/builtin/tag.c
+++ b/builtin/tag.c
@@ -552,9 +552,10 @@ int cmd_tag(int argc, const char **argv, const char *prefix)
 	if (force && !is_null_oid(&prev) && oidcmp(&prev, &object))
 		printf(_("Updated tag '%s' (was %s)\n"), tag, find_unique_abbrev(prev.hash, DEFAULT_ABBREV));
 
-	strbuf_release(&err);
-	strbuf_release(&buf);
-	strbuf_release(&ref);
-	strbuf_release(&reflog_msg);
+	UNLEAK(buf);
+	UNLEAK(ref);
+	UNLEAK(reflog_msg);
+	UNLEAK(msg);
+	UNLEAK(err);
 	return 0;
 }
-- 
2.14.2.666.gea220ee40