libhb: fix potential invalid memory access in decomb (again)

I missed a spot where an even wider left/right margin is
needed.


git-svn-id: svn://svn.handbrake.fr/HandBrake/trunk@4961 b64f7644-9d1e-0410-96f1-a4d463321fa5

1 files changed, 2 insertions, 0 deletions

diff --git a/libhb/fifo.c b/libhb/fifo.c
index 1f0d2ef97..8fcde27b6 100644
--- a/libhb/fifo.c
+++ b/libhb/fifo.c
@@ -334,6 +334,7 @@ hb_buffer_t * hb_buffer_init( int size )
         hb_lock(buffers.lock);
         buffers.allocated += b->alloc;
         hb_unlock(buffers.lock);
+        memset(b->data, 0, b->alloc);
     }
     return b;
 }
@@ -346,6 +347,7 @@ void hb_buffer_realloc( hb_buffer_t * b, int size )
         size = size_to_pool( size )->buffer_size;
         b->data  = realloc( b->data, size );
         b->alloc = size;
+        memset(b->data, 0, b->alloc);
 
         hb_lock(buffers.lock);
         buffers.allocated += size - orig;