Ken Thomases : winemac: Add proper locking in macdrv_surface_set_region().

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 7ab76484c44c687e7c95c2680cd6895648fbabfe
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=7ab76484c44c687e7c95c2680cd6895648fbabfe

Author: Ken Thomases <ken at codeweavers.com>
Date:   Thu Mar 28 23:33:56 2013 -0500

winemac: Add proper locking in macdrv_surface_set_region().

---

 dlls/winemac.drv/surface.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/dlls/winemac.drv/surface.c b/dlls/winemac.drv/surface.c
index 748562f..29fc7f8 100644
--- a/dlls/winemac.drv/surface.c
+++ b/dlls/winemac.drv/surface.c
@@ -124,6 +124,8 @@ static void macdrv_surface_set_region(struct window_surface *window_surface, HRG
 
     TRACE("updating surface %p with %p\n", surface, region);
 
+    window_surface->funcs->lock(window_surface);
+
     HeapFree(GetProcessHeap(), 0, surface->region_data);
     surface->region_data = NULL;
 
@@ -133,6 +135,8 @@ static void macdrv_surface_set_region(struct window_surface *window_surface, HRG
         if (rc != ERROR)
             surface->region_data = get_region_data(region, 0);
     }
+
+    window_surface->funcs->unlock(window_surface);
 }
 
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