Louis Lenders : user32: Don' t crash if a WM_NCCREATE message is sent with lParam=0.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 0679dee775fc691a0e6d3272e98027cacd73ea1c
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=0679dee775fc691a0e6d3272e98027cacd73ea1c

Author: Louis Lenders <xerox_xerox2000 at yahoo.co.uk>
Date:   Wed Feb  7 19:57:55 2007 +0000

user32: Don't crash if a WM_NCCREATE message is sent with lParam=0.

---

 dlls/user32/defwnd.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/dlls/user32/defwnd.c b/dlls/user32/defwnd.c
index 06c10b2..d9af35c 100644
--- a/dlls/user32/defwnd.c
+++ b/dlls/user32/defwnd.c
@@ -772,6 +772,7 @@ LRESULT WINAPI DefWindowProcA( HWND hwnd
     switch(msg)
     {
     case WM_NCCREATE:
+        if (lParam)
         {
             CREATESTRUCTA *cs = (CREATESTRUCTA *)lParam;
             /* check for string, as static icons, bitmaps (SS_ICON, SS_BITMAP)
@@ -930,6 +931,7 @@ LRESULT WINAPI DefWindowProcW(
     switch(msg)
     {
     case WM_NCCREATE:
+        if (lParam)
         {
             CREATESTRUCTW *cs = (CREATESTRUCTW *)lParam;
             /* check for string, as static icons, bitmaps (SS_ICON, SS_BITMAP)