user32:dialog.c: Prevention endless loop. [try3]

[Anatoly Lyutin]

A possibly to receive  a endless loop if a Tabs messages are processed 
in dialog box through IsDialogMessageW .
The reaction of Tabs on WM_GETDLGCODE is return DLGC_WANTARROWS | 
DLGC_WANTCHARS.
WM_KEYDOWN process in IsDialogMessageW in WM_SYSCHAR case. In this case 
calls a DIALOG_IsAccelerator function. Inside this function is do-while 
loop and send WM_GETDLGCODE message. When this message is send to Tabs 
it originates endless loop.

Should help on bug #9781


Changelog:
 Prevention endless loop.

-- 
Best regards
	Anatoly Lyutin.

-------------- next part --------------
A non-text attachment was scrubbed...
Name: user32-dialog-IsAccelerator.patch
Type: text/x-patch
Size: 775 bytes
Desc: not available
Url : http://www.winehq.org/pipermail/wine-patches/attachments/20071115/da43a584/attachment-0001.bin