Clean up the power iteration loop slightly
Clean up the power iteration loop slightly

RMKD/networkx,aureooms/networkx,sharifulgeo/networkx,ionanrozenfeld/networkx,bzero/networkx,bzero/networkx,nathania/networkx,harlowja/networkx,debsankha/networkx,Sixshaman/networkx,ghdk/networkx,goulu/networkx,JamesClough/networkx,nathania/networkx,wasade/networkx,farhaanbukhsh/networkx,dmoliveira/networkx,sharifulgeo/networkx,RMKD/networkx,farhaanbukhsh/networkx,kernc/networkx,bzero/networkx,chrisnatali/networkx,OrkoHunter/networkx,harlowja/networkx,ltiao/networkx,aureooms/networkx,dhimmel/networkx,debsankha/networkx,ionanrozenfeld/networkx,andnovar/networkx,jni/networkx,ghdk/networkx,jakevdp/networkx,blublud/networkx,beni55/networkx,sharifulgeo/networkx,dhimmel/networkx,kernc/networkx,tmilicic/networkx,kernc/networkx,ionanrozenfeld/networkx,chrisnatali/networkx,dmoliveira/networkx,ghdk/networkx,aureooms/networkx,dhimmel/networkx,blublud/networkx,nathania/networkx,chrisnatali/networkx,yashu-seth/networkx,jakevdp/networkx,harlowja/networkx,SanketDG/networkx,debsankha/networkx,blublud/networkx,farhaanbukhsh/networkx,jakevdp/networkx,jcurbelo/networkx,jfinkels/networkx,NvanAdrichem/networkx,jni/networkx,RMKD/networkx,cmtm/networkx,michaelpacer/networkx,dmoliveira/networkx,jni/networkx