[Bug 16792] BaseHead 1.7 crashes while moving window around

http://bugs.winehq.org/show_bug.cgi?id=16792

--- Comment #1 from Dan Kegel   2009-01-04 11:42:40 ---
And if I add dc->funcs && to line 238 of gdi32/pen.c, it eventually
crashes with

=>0 X11DRV_SelectPen+0x3c(physDev=(nil), hpen=0x64) [dlls/winex11.drv/pen.c:66]
in winex11 (0x0032f9b4)
  1 PEN_SelectObject+0x48(handle=0x64, hdc=0x163c) [dlls/gdi32/pen.c:238] in
gdi32
  2 SelectObject+0xac(hdc=0x163c, hObj=?) [dlls/gdi32/gdiobj.c:1129] in gdi32

so I added dc->funcs && dc->physDev &&.  
Seems to avoid the crash.  I'll attach the patch.  No idea if it's right,
or why those would be null.