Cleaned up implementation of GraphEquals slightly.
Cleaned up implementation of GraphEquals slightly.

hackle/AutoFixture,yuva2achieve/AutoFixture,dlongest/AutoFixture,dcastro/AutoFixture,amarant/AutoFixture,mrinaldi/AutoFixture,sean-gilliam/AutoFixture,StevenJiang2015/AutoFixture,mrinaldi/AutoFixture,dlongest/AutoFixture,sergeyshushlyapin/AutoFixture,zvirja/AutoFixture,dcastro/AutoFixture,olegsych/AutoFixture,amarant/AutoFixture,olegsych/AutoFixture,adamchester/AutoFixture,hackle/AutoFixture,StevenJiang2015/AutoFixture,sergeyshushlyapin/AutoFixture,Pvlerick/AutoFixture,sbrockway/AutoFixture,yuva2achieve/AutoFixture,AutoFixture/AutoFixture,sbrockway/AutoFixture,adamchester/AutoFixture