[PATCH] Fix segfault in diff-delta.c when FLEX_ARRAY is 1

[Pierre Habouzit <madcoder@debian.org>]

aka don't do pointer arithmetics on structs that have a FLEX_ARRAY member,
or you'll end up believing your array is 1 cell off its real address.

Signed-off-by: Pierre Habouzit <madcoder@debian.org>
---
 diff-delta.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/diff-delta.c b/diff-delta.c
index 9e440a9..601b49e 100644
--- a/diff-delta.c
+++ b/diff-delta.c
@@ -264,7 +264,7 @@ struct delta_index * create_delta_index(const void *buf, unsigned long bufsize)
 	index->src_size = bufsize;
 	index->hash_mask = hmask;
 
-	mem = index + 1;
+	mem = index->hash;
 	packed_hash = mem;
 	mem = packed_hash + (hsize+1);
 	packed_entry = mem;
-- 
1.5.4.rc0.1153.gb1b3d-dirty