winex11drv: Make dxgrab global.

dlls/winex11.drv/x11ddraw.c

@@ -46,8 +46,6 @@ typedef struct _X11DEVICE {
   LPX11DRIVERINFO	lpInfo;
 } X11DEVICE,*LPX11DEVICE;
 
-extern int dxgrab;
-
 static LPDDRAWI_DDRAWSURFACE_LCL X11DRV_DD_Primary;
 static LPDDRAWI_DDRAWSURFACE_GBL X11DRV_DD_PrimaryGbl;
 static HWND X11DRV_DD_PrimaryWnd;

dlls/winex11.drv/x11drv.h

@@ -526,6 +526,7 @@ extern unsigned int screen_height;
 extern unsigned int screen_depth;
 extern RECT virtual_screen_rect;
 extern unsigned int text_caps;
+extern int dxgrab;
 extern int use_xkb;
 extern int use_take_focus;
 extern int use_primary_selection;