mi/mibitblt: Fix an overflow bug of bit shift.

When depth equal to 32 and planeMask equal to 0, the overflow will
occur and cause the pixmap can't be cleared. There are some test
cases in XTS hit this bug, and this fix can eliminate the corresponding
failures.

Signed-off-by: Zhigang Gong <[email protected]>
Reviewed-by: Adam Jackson <[email protected]>
Signed-off-by: Keith Packard <[email protected]>
(cherry picked from commit f4956fa)

Author: Zhigang Gong

mi/mibitblt.c

@@ -648,7 +648,7 @@ miGetImage( DrawablePtr pDraw, int sx, int sy, int w, int h,
     depth = pDraw->depth;
     if(format == ZPixmap)
     {
-	if ( (((1<<depth)-1)&planeMask) != (1<<depth)-1 )
+	if ( (((1LL<<depth)-1)&planeMask) != (1LL<<depth)-1 )
 	{
 	    ChangeGCVal gcv;
 	    xPoint pt;