"Bug fix" in stitch_meshes()
"Bug fix" in stitch_meshes()

This is actually a bug (assuming that n_elem == max_elem_id, which
should be false if we've deleted elements but not renumbered) which is
*covered up* by another bug (ReplicatedMesh::n_elem() doesn't take
holes into account) at the moment.  Let's fix the first bug so it
doesn't trigger when/if we get around to fixing the second.

roystgnr/libmesh,svallaghe/libmesh,hrittich/libmesh,BalticPinguin/libmesh,dschwen/libmesh,jwpeterson/libmesh,svallaghe/libmesh,jwpeterson/libmesh,svallaghe/libmesh,capitalaslash/libmesh,giorgiobornia/libmesh,giorgiobornia/libmesh,hrittich/libmesh,giorgiobornia/libmesh,90jrong/libmesh,90jrong/libmesh,dschwen/libmesh,giorgiobornia/libmesh,BalticPinguin/libmesh,capitalaslash/libmesh,capitalaslash/libmesh,pbauman/libmesh,giorgiobornia/libmesh,balborian/libmesh,90jrong/libmesh,balborian/libmesh,BalticPinguin/libmesh,hrittich/libmesh,dschwen/libmesh,roystgnr/libmesh,balborian/libmesh,pbauman/libmesh,pbauman/libmesh,svallaghe/libmesh,libMesh/libmesh,dschwen/libmesh,svallaghe/libmesh,libMesh/libmesh,pbauman/libmesh,balborian/libmesh,90jrong/libmesh,roystgnr/libmesh,libMesh/libmesh,hrittich/libmesh,roystgnr/libmesh,hrittich/libmesh,90jrong/libmesh,90jrong/libmesh,90jrong/libmesh,jwpeterson/libmesh,dschwen/libmesh,libMesh/libmesh,BalticPinguin/libmesh,pbauman/libmesh,pbauman/libmesh,balborian/libmesh,jwpeterson/libmesh,giorgiobornia/libmesh,capitalaslash/libmesh,dschwen/libmesh,roystgnr/libmesh,pbauman/libmesh,giorgiobornia/libmesh,BalticPinguin/libmesh,giorgiobornia/libmesh,libMesh/libmesh,capitalaslash/libmesh,roystgnr/libmesh,giorgiobornia/libmesh,capitalaslash/libmesh,pbauman/libmesh,balborian/libmesh,BalticPinguin/libmesh,hrittich/libmesh,pbauman/libmesh,jwpeterson/libmesh,svallaghe/libmesh,90jrong/libmesh,svallaghe/libmesh,jwpeterson/libmesh,balborian/libmesh,BalticPinguin/libmesh,svallaghe/libmesh,90jrong/libmesh,jwpeterson/libmesh,libMesh/libmesh,libMesh/libmesh,dschwen/libmesh,balborian/libmesh,balborian/libmesh,svallaghe/libmesh,dschwen/libmesh,libMesh/libmesh,hrittich/libmesh,balborian/libmesh,capitalaslash/libmesh,roystgnr/libmesh,capitalaslash/libmesh,BalticPinguin/libmesh,hrittich/libmesh,jwpeterson/libmesh,hrittich/libmesh,roystgnr/libmesh