Fix new unused-variable warnings in contrib.
Fix new unused-variable warnings in contrib.

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