safer delete

[slava77]

delete [] x -> operator delete [] (x)
to avoid locks in jemalloc.

This came up in tests with CMSSW.

[kmcdermo]

@slava77 , can you post the benchmarks? this seems like a fix that should go in right away

[slava77]

@slava77 , can you post the benchmarks? this seems like a fix that should go in right away

I'm not setup to run benchmarks atm

[makortel]

Could we get this one integrated soon? :)

[srlantz]

Standard operating procedure is to run the benchmarks and verify there are no bad side effects before the pull request is merged. That's the only thing standing in the way of this PR as far as I know.

[tresreid]

I have run benchmarks for this. They can be found here: http://mireid.web.cern.ch/mireid/Benchmarks/benchmarks_7_3_19_saferdel/
However, I think Slava's repo might have been private since i was not able to access it. I ended up just making the changes by hand instead of pulling this branch. Seeing as though this was only two lines, i don't think that should be a problem.