Return early if mask is 0

2010-10-13 15:38:52 -04:00 · 2010-10-13 15:38:52 -04:00 · 3506b2e78d
parent 5c1c8c9c50
commit 3506b2e78d
1 changed files with 3 additions and 0 deletions
--- a/src/hb-buffer.cc
+++ b/src/hb-buffer.cc
@ -478,6 +478,9 @@ _hb_buffer_add_masks (hb_buffer_t *buffer,
  hb_mask_t not_mask = ~mask;
  value &= mask;

+  if (!mask)
+    return;
+
  if (cluster_start == 0 && cluster_end == (unsigned int)-1) {
    unsigned int count = buffer->len;
    for (unsigned int i = 0; i < count; i++)