[PATCH] Fix an unitialized pointer in merge-recursive.c

Indeed &mrtree is passed to merge_trees() that not always
seems to set the value, so on some paths mrtree could
return uninitialized.

Spotted by a gcc 4.2.1 warning

Signed-off-by: Marco Costalba <redacted>
---
 merge-recursive.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/merge-recursive.c b/merge-recursive.c
index 16f6a0f..934b0d6 100644
--- a/merge-recursive.c
+++ b/merge-recursive.c

@@ -1610,7 +1610,7 @@ static int merge(struct commit
 {
  	struct commit_list *iter;
  	struct commit *merged_common_ancestors;
-	struct tree *mrtree;
+	struct tree *mrtree = NULL;
 	int clean;

 	if (show(4)) {

-- 
1.5.3.rc4.67.gf9286