[gtk+] bitmask: Optimize intersect

[Matthias Clasen <matthiasc src gnome org>]

commit 0957ba522008bc08631ee209b4dae8d7c5a7dce0
Author: Matthias Clasen <mclasen redhat com>
Date:   Thu Sep 10 18:46:58 2015 -0400

    bitmask: Optimize intersect
    
    The functions was written in a way that would possibly
    resize the mask twice, which is not necessary.

 gtk/gtkallocatedbitmask.c |    7 +++++--
 1 files changed, 5 insertions(+), 2 deletions(-)
---
diff --git a/gtk/gtkallocatedbitmask.c b/gtk/gtkallocatedbitmask.c
index 6f0f1f8..567b86c 100644
--- a/gtk/gtkallocatedbitmask.c
+++ b/gtk/gtkallocatedbitmask.c
@@ -174,11 +174,14 @@ _gtk_allocated_bitmask_intersect (GtkBitmask       *mask,
   mask = gtk_bitmask_ensure_allocated (mask);
   ENSURE_ALLOCATED (other, other_allocated);
 
-  mask = gtk_allocated_bitmask_resize (mask, MIN (mask->len, other->len));
-  for (i = 0; i < mask->len; i++)
+  for (i = 0; i < MIN (mask->len, other->len); i++)
     {
       mask->data[i] &= other->data[i];
     }
+  for (; i < mask->len; i++)
+    {
+      mask->data[i] = 0;
+    }
 
   return gtk_allocated_bitmask_shrink (mask);
 }