[PATCH v3 03/19] apply: clear_image() clears things a bit more

[Junio C Hamano <gitster@pobox.com>]

The clear_image() function did not clear the line table in the image
structure; this does not matter for the current callers, as the function
is only called from the codepaths that deal with binary patches where the
line table is never populated, and the codepaths that do populate the line
table free it themselves.

But it will start to matter when we introduce a codepath to retry a failed
patch, so make sure it clears and frees everything.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
---
 builtin/apply.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/builtin/apply.c b/builtin/apply.c
index 8488c8e..e2b0942 100644
--- a/builtin/apply.c
+++ b/builtin/apply.c
@@ -371,8 +371,8 @@ static void prepare_image(struct image *image, char *buf, size_t len,
 static void clear_image(struct image *image)
 {
 	free(image->buf);
-	image->buf = NULL;
-	image->len = 0;
+	free(image->line_allocated);
+	memset(image, 0, sizeof(*image));
 }
 
 /* fmt must contain _one_ %s and no other substitution */
-- 
1.7.11.rc3.30.g3bdace2