[Bug 38276] New: IsDialogMessage(NULL,...) mast always return FALSE!

https://bugs.winehq.org/show_bug.cgi?id=38276

Bug ID: 38276
           Summary: IsDialogMessage(NULL,...) mast always return FALSE!
           Product: Wine
           Version: 1.7.8
          Hardware: x86
                OS: FreeBSD
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: user32
          Assignee: [e-mail]
          Reporter: [e-mail]

IsDialogMessage(NULL,...) mast always return FALSE.

http://source.winehq.org/git/wine.git/blob/e882cdf55cc004b5ffb7b85d912b4733d...
2858 BOOL WINAPI IsDialogMessageA( HWND hwndDlg, LPMSG pmsg )
2859 {
+ if (hwndDlg == NULL) return FALSE;

http://source.winehq.org/git/wine.git/blob/e882cdf55cc004b5ffb7b85d912b4733d...
1052 BOOL WINAPI IsDialogMessageW( HWND hwndDlg, LPMSG msg )
1053 {
1054 INT dlgCode = 0;
1055 
+ if (hwndDlg == NULL) return FALSE;

http://source.winehq.org/git/wine.git/blob/e882cdf55cc004b5ffb7b85d912b4733d...
3065 static BOOL PROPSHEET_IsDialogMessage(HWND hwnd, LPMSG lpMsg)
3066 {
3067 PropSheetInfo* psInfo = (PropSheetInfo*) GetPropW(hwnd, PropSheetInfoStr);
3068
3069 TRACE("\n");
 if (!psInfo || hwnd == NULL || (hwnd != lpMsg->hwnd && !IsChild(hwnd,
lpMsg->hwnd)))
3071 return FALSE;