Mask out checksum in gpcheckmirrorseg.pl
Mask out checksum in gpcheckmirrorseg.pl

Add the checksum masking and clearly separate where that masking is applied
separately from when the lp array masking is applied.

This will ensure the data in buf only updated once.

Signed-off-by: C.J. Jameson <ec1b14366327ff10b752f9848cd5b8311e885007@pivotal.io>

50wu/gpdb,kaknikhil/gpdb,adam8157/gpdb,cjcjameson/gpdb,50wu/gpdb,janebeckman/gpdb,adam8157/gpdb,jmcatamney/gpdb,jmcatamney/gpdb,Quikling/gpdb,Quikling/gpdb,ashwinstar/gpdb,xinzweb/gpdb,kaknikhil/gpdb,janebeckman/gpdb,Chibin/gpdb,janebeckman/gpdb,cjcjameson/gpdb,lisakowen/gpdb,greenplum-db/gpdb,lisakowen/gpdb,xinzweb/gpdb,lisakowen/gpdb,adam8157/gpdb,jmcatamney/gpdb,edespino/gpdb,lisakowen/gpdb,Quikling/gpdb,kaknikhil/gpdb,jmcatamney/gpdb,yuanzhao/gpdb,Quikling/gpdb,Chibin/gpdb,lisakowen/gpdb,janebeckman/gpdb,edespino/gpdb,Chibin/gpdb,Chibin/gpdb,50wu/gpdb,xinzweb/gpdb,ashwinstar/gpdb,yuanzhao/gpdb,Chibin/gpdb,yuanzhao/gpdb,greenplum-db/gpdb,greenplum-db/gpdb,ashwinstar/gpdb,kaknikhil/gpdb,cjcjameson/gpdb,Quikling/gpdb,lisakowen/gpdb,50wu/gpdb,50wu/gpdb,cjcjameson/gpdb,Chibin/gpdb,ashwinstar/gpdb,kaknikhil/gpdb,edespino/gpdb,jmcatamney/gpdb,Quikling/gpdb,edespino/gpdb,greenplum-db/gpdb,ashwinstar/gpdb,edespino/gpdb,cjcjameson/gpdb,Chibin/gpdb,Quikling/gpdb,adam8157/gpdb,kaknikhil/gpdb,cjcjameson/gpdb,Chibin/gpdb,yuanzhao/gpdb,Quikling/gpdb,xinzweb/gpdb,xinzweb/gpdb,xinzweb/gpdb,adam8157/gpdb,edespino/gpdb,edespino/gpdb,50wu/gpdb,greenplum-db/gpdb,adam8157/gpdb,janebeckman/gpdb,janebeckman/gpdb,jmcatamney/gpdb,50wu/gpdb,cjcjameson/gpdb,kaknikhil/gpdb,Chibin/gpdb,50wu/gpdb,adam8157/gpdb,ashwinstar/gpdb,Quikling/gpdb,cjcjameson/gpdb,janebeckman/gpdb,ashwinstar/gpdb,janebeckman/gpdb,yuanzhao/gpdb,jmcatamney/gpdb,janebeckman/gpdb,jmcatamney/gpdb,kaknikhil/gpdb,yuanzhao/gpdb,lisakowen/gpdb,greenplum-db/gpdb,lisakowen/gpdb,kaknikhil/gpdb,xinzweb/gpdb,cjcjameson/gpdb,adam8157/gpdb,edespino/gpdb,greenplum-db/gpdb,ashwinstar/gpdb,yuanzhao/gpdb,yuanzhao/gpdb,janebeckman/gpdb,Quikling/gpdb,Chibin/gpdb,yuanzhao/gpdb,xinzweb/gpdb,edespino/gpdb,kaknikhil/gpdb,edespino/gpdb,yuanzhao/gpdb,greenplum-db/gpdb,cjcjameson/gpdb