revision: convert to using diff_tree_sha1()
commit6275c91c08f16f9d9aefea39ab7dab8560f50512
authorKirill Smelkov <kirr@mns.spb.ru>
Wed, 5 Feb 2014 16:57:12 +0000 (5 20:57 +0400)
committerJunio C Hamano <gitster@pobox.com>
Wed, 5 Feb 2014 18:51:16 +0000 (5 10:51 -0800)
tree96c90081fab08c1d0aa52b743a97a18e702a0204
parent7bc4ec01dde22be0156d64ef77db7364a11cb859
revision: convert to using diff_tree_sha1()

Since diff_tree_sha1() can now accept empty trees via NULL sha1, we
could just call it without manually reading trees into tree_desc and
duplicating code.

Besides, that

if (!tree)
return 0;

looked suspect - we were saying an invalid tree != empty tree, but maybe it is
better to just say the tree is invalid here, which is what diff_tree_sha1()
does for such case.

Signed-off-by: Kirill Smelkov <kirr@mns.spb.ru>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
revision.c