I have no idea why getpwuid() suddenly decided to return NULL (with errno=0) on one of my systems, but the man page suggests a returned NULL is indeed an Official Thing That Can Happen, so let's make sure we don't just segfault when it does.
I have no idea why getpwuid() suddenly decided to return NULL (with
errno=0) on one of my systems, but the man page suggests a returned
NULL is indeed an Official Thing That Can Happen, so let's make sure
we don't just segfault when it does.



git-svn-id: e88a1e38e13faf406e05cc89eca8dd613216f6c4@6235 434f946d-2f3d-0410-ba4c-cb9f52fb0dbf

hrittich/libmesh,dmcdougall/libmesh,coreymbryant/libmesh,90jrong/libmesh,friedmud/libmesh,dmcdougall/libmesh,svallaghe/libmesh,coreymbryant/libmesh,pbauman/libmesh,friedmud/libmesh,dschwen/libmesh,dknez/libmesh,cahaynes/libmesh,roystgnr/libmesh,dmcdougall/libmesh,giorgiobornia/libmesh,aeslaughter/libmesh,svallaghe/libmesh,giorgiobornia/libmesh,vikramvgarg/libmesh,BalticPinguin/libmesh,hrittich/libmesh,dmcdougall/libmesh,pbauman/libmesh,aeslaughter/libmesh,dschwen/libmesh,giorgiobornia/libmesh,benkirk/libmesh,vikramvgarg/libmesh,roystgnr/libmesh,balborian/libmesh,capitalaslash/libmesh,cahaynes/libmesh,balborian/libmesh,libMesh/libmesh,friedmud/libmesh,aeslaughter/libmesh,svallaghe/libmesh,90jrong/libmesh,giorgiobornia/libmesh,jwpeterson/libmesh,BalticPinguin/libmesh,dschwen/libmesh,dschwen/libmesh,jwpeterson/libmesh,balborian/libmesh,90jrong/libmesh,hrittich/libmesh,cahaynes/libmesh,jwpeterson/libmesh,90jrong/libmesh,balborian/libmesh,dknez/libmesh,coreymbryant/libmesh,capitalaslash/libmesh,aeslaughter/libmesh,svallaghe/libmesh,svallaghe/libmesh,pbauman/libmesh,BalticPinguin/libmesh,hrittich/libmesh,dmcdougall/libmesh,cahaynes/libmesh,benkirk/libmesh,jwpeterson/libmesh,coreymbryant/libmesh,roystgnr/libmesh,friedmud/libmesh,coreymbryant/libmesh,vikramvgarg/libmesh,roystgnr/libmesh,capitalaslash/libmesh,aeslaughter/libmesh,balborian/libmesh,giorgiobornia/libmesh,pbauman/libmesh,friedmud/libmesh,roystgnr/libmesh,coreymbryant/libmesh,friedmud/libmesh,cahaynes/libmesh,dschwen/libmesh,aeslaughter/libmesh,giorgiobornia/libmesh,jwpeterson/libmesh,svallaghe/libmesh,pbauman/libmesh,libMesh/libmesh,balborian/libmesh,pbauman/libmesh,90jrong/libmesh,90jrong/libmesh,hrittich/libmesh,libMesh/libmesh,coreymbryant/libmesh,vikramvgarg/libmesh,roystgnr/libmesh,libMesh/libmesh,pbauman/libmesh,90jrong/libmesh,benkirk/libmesh,friedmud/libmesh,cahaynes/libmesh,vikramvgarg/libmesh,dknez/libmesh,svallaghe/libmesh,dmcdougall/libmesh,balborian/libmesh,cahaynes/libmesh,jwpeterson/libmesh,BalticPinguin/libmesh,svallaghe/libmesh,vikramvgarg/libmesh,hrittich/libmesh,hrittich/libmesh,benkirk/libmesh,jwpeterson/libmesh,libMesh/libmesh,friedmud/libmesh,vikramvgarg/libmesh,hrittich/libmesh,balborian/libmesh,90jrong/libmesh,dknez/libmesh,jwpeterson/libmesh,friedmud/libmesh,coreymbryant/libmesh,aeslaughter/libmesh,balborian/libmesh,aeslaughter/libmesh,capitalaslash/libmesh,vikramvgarg/libmesh,BalticPinguin/libmesh,dknez/libmesh,capitalaslash/libmesh,capitalaslash/libmesh,libMesh/libmesh,BalticPinguin/libmesh,capitalaslash/libmesh,libMesh/libmesh,dschwen/libmesh,benkirk/libmesh,capitalaslash/libmesh,hrittich/libmesh,benkirk/libmesh,aeslaughter/libmesh,dschwen/libmesh,dmcdougall/libmesh,svallaghe/libmesh,BalticPinguin/libmesh,balborian/libmesh,roystgnr/libmesh,pbauman/libmesh,benkirk/libmesh,giorgiobornia/libmesh,libMesh/libmesh,90jrong/libmesh,dschwen/libmesh,giorgiobornia/libmesh,giorgiobornia/libmesh,BalticPinguin/libmesh,pbauman/libmesh,cahaynes/libmesh,vikramvgarg/libmesh,dknez/libmesh,roystgnr/libmesh,benkirk/libmesh,dmcdougall/libmesh,dknez/libmesh,benkirk/libmesh,dknez/libmesh