Fixes leaks in error paths found by Parfait 1.0.0:

Error: X Resource Leak
   Leaked X Resource pix
        at line 62 of CrBFData.c in function 'XCreateBitmapFromData'.
          pix initialized at line 60 with XCreatePixmap
Error: X Resource Leak
   Leaked X Resource pix
        at line 70 of CrPFBData.c in function 'XCreatePixmapFromBitmapData'.
          pix initialized at line 66 with XCreatePixmap
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Reviewed-by: Aaron Plattner <aplattner@nvidia.com>
Backported-to-NX-by: Ulrich Sibiller <uli42@gmx.de>