Hashtable cleanups from bdeverify
Hashtable cleanups from bdeverify

bloomberg/bde-allocator-benchmarks,RMGiroux/bde-allocator-benchmarks,minhlongdo/bde,che2/bde,idispatch/bde,bloomberg/bde,dharesign/bde,gbleaney/Allocator-Benchmarks,RMGiroux/bde-allocator-benchmarks,saxena84/bde,bloomberg/bde,abeels/bde,mversche/bde,bowlofstew/bde,minhlongdo/bde,abeels/bde,saxena84/bde,bloomberg/bde-allocator-benchmarks,saxena84/bde,abeels/bde,jmptrader/bde,bowlofstew/bde,RMGiroux/bde-allocator-benchmarks,dbremner/bde,dharesign/bde,osubboo/bde,RMGiroux/bde-allocator-benchmarks,apaprocki/bde,gbleaney/Allocator-Benchmarks,idispatch/bde,minhlongdo/bde,jmptrader/bde,bloomberg/bde,frutiger/bde,frutiger/bde,abeels/bde,dbremner/bde,frutiger/bde,dharesign/bde,apaprocki/bde,abeels/bde,frutiger/bde,bloomberg/bde,osubboo/bde,jmptrader/bde,che2/bde,osubboo/bde,apaprocki/bde,mversche/bde,bloomberg/bde-allocator-benchmarks,mversche/bde,bloomberg/bde-allocator-benchmarks,bloomberg/bde-allocator-benchmarks,bowlofstew/bde,gbleaney/Allocator-Benchmarks,osubboo/bde,che2/bde,dharesign/bde,bloomberg/bde,abeels/bde,minhlongdo/bde,dbremner/bde,jmptrader/bde,saxena84/bde,bowlofstew/bde,apaprocki/bde,RMGiroux/bde-allocator-benchmarks,idispatch/bde,che2/bde,gbleaney/Allocator-Benchmarks,mversche/bde,idispatch/bde,dbremner/bde,apaprocki/bde