ofz#11545 can treat BITFIELDS like COMPRESS_NONE for size sanity check

Change-Id: Ic8b0cbe0c7821d287b2233bc015cb888e0e18d88
Reviewed-on: https://gerrit.libreoffice.org/67110
Tested-by: Jenkins
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>

vcl/source/gdi/dibtools.cxx

@@ -943,7 +943,6 @@ bool ImplReadDIBBody(SvStream& rIStm, Bitmap& rBmp, AlphaMask* pBmpAlpha, sal_uL
             break;
         }
         case BITFIELDS:
-            break;
         case ZCOMPRESS:
         case COMPRESS_NONE:
         {