[PATCH 1/2] fast-import: plug leak of dirty trees in 'ls' command

When the named directory has changed since it was last written to
pack, "tree_content_get" makes a deep copy of the list of tree entries
which we forgot to free.

This memory leak has been present since the "ls" command was
introduced in v1.7.5-rc0~3^2~33 (fast-import: add 'ls' command,
2010-12-02).

Signed-off-by: Jonathan Nieder <redacted>
---
After rediscovering this, I found [1] which mentions the same bug.

[1] http://thread.gmane.org/gmane.comp.version-control.git/178007/focus=178044

 fast-import.c |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/fast-import.c b/fast-import.c
index c1486cab..1758da94 100644
--- a/fast-import.c
+++ b/fast-import.c

@@ -3028,6 +3028,8 @@ static void parse_ls(struct branch *b)
 		store_tree(&leaf);
 
 	print_ls(leaf.versions[1].mode, leaf.versions[1].sha1, p);
+	if (leaf.tree)
+		release_tree_content_recursive(leaf.tree);
 	if (!b || root != &b->branch_tree)
 		release_tree_entry(root);
 }

-- 
1.7.9.2