Changes in error_vector.C for -Wshadow.
Changes in error_vector.C for -Wshadow.

Issue #24.

vikramvgarg/libmesh,90jrong/libmesh,cahaynes/libmesh,karpeev/libmesh,aeslaughter/libmesh,permcody/libmesh,hrittich/libmesh,Mbewu/libmesh,giorgiobornia/libmesh,friedmud/libmesh,libMesh/libmesh,salazardetroya/libmesh,balborian/libmesh,capitalaslash/libmesh,hrittich/libmesh,capitalaslash/libmesh,markcmiller86/libmesh_silo,90jrong/libmesh,pbauman/libmesh,dmcdougall/libmesh,jwpeterson/libmesh,permcody/libmesh,svallaghe/libmesh,hrittich/libmesh,dmcdougall/libmesh,friedmud/libmesh,friedmud/libmesh,pbauman/libmesh,jwpeterson/libmesh,friedmud/libmesh,roystgnr/libmesh,90jrong/libmesh,jiangwen84/libmesh,benkirk/libmesh,markcmiller86/libmesh_silo,Mbewu/libmesh,vikramvgarg/libmesh,dknez/libmesh,aeslaughter/libmesh,giorgiobornia/libmesh,svallaghe/libmesh,dschwen/libmesh,libMesh/libmesh,vikramvgarg/libmesh,jwpeterson/libmesh,salazardetroya/libmesh,svallaghe/libmesh,Mbewu/libmesh,markcmiller86/libmesh_silo,roystgnr/libmesh,karpeev/libmesh,BalticPinguin/libmesh,svallaghe/libmesh,90jrong/libmesh,salazardetroya/libmesh,dschwen/libmesh,permcody/libmesh,balborian/libmesh,karpeev/libmesh,aeslaughter/libmesh,Mbewu/libmesh,libMesh/libmesh,90jrong/libmesh,90jrong/libmesh,Mbewu/libmesh,pbauman/libmesh,markcmiller86/libmesh_silo,salazardetroya/libmesh,markcmiller86/libmesh_silo,giorgiobornia/libmesh,balborian/libmesh,vikramvgarg/libmesh,BalticPinguin/libmesh,BalticPinguin/libmesh,libMesh/libmesh,coreymbryant/libmesh,BalticPinguin/libmesh,vikramvgarg/libmesh,karpeev/libmesh,coreymbryant/libmesh,dmcdougall/libmesh,coreymbryant/libmesh,vikramvgarg/libmesh,vikramvgarg/libmesh,salazardetroya/libmesh,permcody/libmesh,vikramvgarg/libmesh,balborian/libmesh,jiangwen84/libmesh,dknez/libmesh,pbauman/libmesh,coreymbryant/libmesh,balborian/libmesh,libMesh/libmesh,salazardetroya/libmesh,capitalaslash/libmesh,hrittich/libmesh,svallaghe/libmesh,dknez/libmesh,benkirk/libmesh,svallaghe/libmesh,Mbewu/libmesh,BalticPinguin/libmesh,hrittich/libmesh,aeslaughter/libmesh,svallaghe/libmesh,permcody/libmesh,benkirk/libmesh,cahaynes/libmesh,capitalaslash/libmesh,cahaynes/libmesh,Mbewu/libmesh,svallaghe/libmesh,coreymbryant/libmesh,hrittich/libmesh,pbauman/libmesh,aeslaughter/libmesh,friedmud/libmesh,coreymbryant/libmesh,vikramvgarg/libmesh,coreymbryant/libmesh,libMesh/libmesh,90jrong/libmesh,dknez/libmesh,aeslaughter/libmesh,cahaynes/libmesh,dknez/libmesh,dmcdougall/libmesh,karpeev/libmesh,jiangwen84/libmesh,karpeev/libmesh,jwpeterson/libmesh,benkirk/libmesh,jwpeterson/libmesh,markcmiller86/libmesh_silo,capitalaslash/libmesh,friedmud/libmesh,cahaynes/libmesh,permcody/libmesh,salazardetroya/libmesh,roystgnr/libmesh,jiangwen84/libmesh,jwpeterson/libmesh,jiangwen84/libmesh,dmcdougall/libmesh,dknez/libmesh,pbauman/libmesh,permcody/libmesh,dschwen/libmesh,cahaynes/libmesh,dschwen/libmesh,benkirk/libmesh,dmcdougall/libmesh,libMesh/libmesh,dschwen/libmesh,aeslaughter/libmesh,cahaynes/libmesh,dmcdougall/libmesh,hrittich/libmesh,cahaynes/libmesh,BalticPinguin/libmesh,balborian/libmesh,balborian/libmesh,dmcdougall/libmesh,dknez/libmesh,balborian/libmesh,Mbewu/libmesh,capitalaslash/libmesh,pbauman/libmesh,dschwen/libmesh,giorgiobornia/libmesh,karpeev/libmesh,balborian/libmesh,benkirk/libmesh,90jrong/libmesh,BalticPinguin/libmesh,friedmud/libmesh,karpeev/libmesh,jwpeterson/libmesh,roystgnr/libmesh,markcmiller86/libmesh_silo,roystgnr/libmesh,giorgiobornia/libmesh,BalticPinguin/libmesh,permcody/libmesh,benkirk/libmesh,capitalaslash/libmesh,roystgnr/libmesh,roystgnr/libmesh,jiangwen84/libmesh,90jrong/libmesh,giorgiobornia/libmesh,friedmud/libmesh,libMesh/libmesh,dschwen/libmesh,salazardetroya/libmesh,jiangwen84/libmesh,dschwen/libmesh,aeslaughter/libmesh,svallaghe/libmesh,roystgnr/libmesh,benkirk/libmesh,jwpeterson/libmesh,giorgiobornia/libmesh,markcmiller86/libmesh_silo,capitalaslash/libmesh,giorgiobornia/libmesh,pbauman/libmesh,coreymbryant/libmesh,balborian/libmesh,jiangwen84/libmesh,giorgiobornia/libmesh,benkirk/libmesh,hrittich/libmesh,pbauman/libmesh,hrittich/libmesh,Mbewu/libmesh,aeslaughter/libmesh,dknez/libmesh,friedmud/libmesh