[PATCH] unpack-trees.c: check return value of lstat()

["Torsten Bögershausen" <tboegi@web.de>]

Since commit f66caa "do not overwrite files in leading path"
at one place lstat() was called but the result was not checked.

Signed-off-by: Torsten Bögershausen <tboegi@web.de>
---
(While I was experimenting with something different, 
this was found by valgrind)
Please review the patch, comments wellcome.

 unpack-trees.c |    7 +++----
 1 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/unpack-trees.c b/unpack-trees.c
index 1ca41b1..42f7aad 100644
--- a/unpack-trees.c
+++ b/unpack-trees.c
@@ -1374,10 +1374,9 @@ static int verify_absent_1(struct cache_entry *ce,
 		char path[PATH_MAX + 1];
 		memcpy(path, ce->name, len);
 		path[len] = 0;
-		lstat(path, &st);
-
-		return check_ok_to_remove(path, len, DT_UNKNOWN, NULL, &st,
-				error_type, o);
+		if (!lstat(path, &st))
+			return check_ok_to_remove(path, len, DT_UNKNOWN, NULL, &st,
+			                          error_type, o);
 	} else if (!lstat(ce->name, &st))
 		return check_ok_to_remove(ce->name, ce_namelen(ce),
 				ce_to_dtype(ce), ce, &st,
-- 
1.7.4