Fix processing of string_eval inside of dsym
Fix processing of string_eval inside of dsym

when formatting code. Ruby2Ruby expects :evstr, which brakeman changes
to :string_eval mostly so I remember what it is.

masarakki/brakeman,jlecour/brakeman,jlecour/brakeman,jeffyip/brakeman,htdc/brakeman,github/brakeman,lee-leon/brakeman,masarakki/brakeman,liqites/brakeman,jakeatwork/brakeman,cheerfulstoic/brakeman,dfens/brakeman,liqites/brakeman,spcoder/brakeman,cheerfulstoic/brakeman,kbrock/brakeman,codeclimate/brakeman-deprecated,PragTob/brakeman,github/brakeman,htdc/brakeman,jeffyip/brakeman,lee-leon/brakeman,htdc/brakeman,codeclimate/brakeman-deprecated,kbrock/brakeman,dfens/brakeman,PragTob/brakeman,dfens/brakeman,oreoshake/brakeman,cheerfulstoic/brakeman,spcoder/brakeman,jakeatwork/brakeman,lee-leon/brakeman,bf4/brakeman,bf4/brakeman,spcoder/brakeman,jakeatwork/brakeman,oreoshake/brakeman,jlecour/brakeman,liqites/brakeman,masarakki/brakeman,bf4/brakeman,kbrock/brakeman