Alexandre Julliard : krnl386.exe: Don' t try to free again an already freed global block.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: f8a89aa0833e213eeb5cf91f16628ee5480fd263
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=f8a89aa0833e213eeb5cf91f16...

Author: Alexandre Julliard <julliard(a)winehq.org>
Date:   Wed Mar  3 11:52:59 2010 +0100

krnl386.exe: Don't try to free again an already freed global block.

---

 dlls/krnl386.exe16/global.c |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/dlls/krnl386.exe16/global.c b/dlls/krnl386.exe16/global.c
index db07477..ba4d7df 100644
--- a/dlls/krnl386.exe16/global.c
+++ b/dlls/krnl386.exe16/global.c
@@ -182,6 +182,11 @@ BOOL16 GLOBAL_FreeBlock( HGLOBAL16 handle )
     sel = GlobalHandleToSel16( handle );
     if (!VALID_HANDLE(sel)) return FALSE;
     pArena = GET_ARENA_PTR(sel);
+    if (!pArena->size)
+    {
+        WARN( "already free %x\n", handle );
+        return FALSE;
+    }
     SELECTOR_FreeBlock( sel );
     memset( pArena, 0, sizeof(GLOBALARENA) );
     return TRUE;