[freetype2] master 1680885aa: [pshinter] Clear reused mask.

[Werner Lemberg]

branch: master
commit 1680885aa57f192a4ddad6ddd70521f4fe013db0
Author: Alexei Podtelezhnikov <apodtele@gmail.com>
Commit: Alexei Podtelezhnikov <apodtele@gmail.com>

    [pshinter] Clear reused mask.
    
    In PS hinter, memory allocations persist until the module is done.
    Therefore, we have to clear reused masks.
    
    * src/pshinter/pshrec.c (ps_mask_table_alloc): Clear reused mask.
---
 src/pshinter/pshrec.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/pshinter/pshrec.c b/src/pshinter/pshrec.c
index e91f5d5ee..2a5cffbad 100644
--- a/src/pshinter/pshrec.c
+++ b/src/pshinter/pshrec.c
@@ -249,6 +249,10 @@
     mask             = table->masks + count - 1;
     mask->num_bits   = 0;
     mask->end_point  = 0;
+    /* reused mask must be cleared */
+    if ( mask->max_bits )
+      FT_MEM_ZERO( mask->bytes, mask->max_bits >> 3 );
+
     table->num_masks = count;
 
   Exit: