Rob Shearman : user32: Free allocated memory in USER_unload_driver.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: ea00dc4b49de4e339c154defdd4e1258ada0290a
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=ea00dc4b49de4e339c154defdd4e1258ada0290a

Author: Rob Shearman <robertshearman at gmail.com>
Date:   Sat Jan 10 20:56:21 2009 +0000

user32: Free allocated memory in USER_unload_driver.

---

 dlls/user32/driver.c |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)

diff --git a/dlls/user32/driver.c b/dlls/user32/driver.c
index 86d1543..6454f65 100644
--- a/dlls/user32/driver.c
+++ b/dlls/user32/driver.c
@@ -141,8 +141,11 @@ static const USER_DRIVER *load_driver(void)
 /* unload the graphics driver on process exit */
 void USER_unload_driver(void)
 {
+    USER_DRIVER *prev;
     /* make sure we don't try to call the driver after it has been detached */
-    USER_Driver = &null_driver;
+    prev = InterlockedExchangePointer( (void **)&USER_Driver, &null_driver );
+    if (prev != &lazy_load_driver && prev != &null_driver)
+        HeapFree( GetProcessHeap(), 0, prev );
 }