Don't explode if the file we're in doesn't exist.
Don't explode if the file we're in doesn't exist.

This happens particularly in testing where you want to delete files
after each test, but the REPL state isn't reset correctly.

sideci-sample/sideci-sample-pry,jasonm23/pry,tdg5/pry,85x14/pry,jasnow/pry,tdg5/pry,raeno/pry,josue804/debunker,nju520/pry,richo/pry,scalixte-mdsol/pry,nju520/pry,scalixte-mdsol/pry,printercu/pry,nju520/pry,scalixte-mdsol/pry,raeno/pry,sferik/pry,gfvcastro/pry,85x14/pry,geoffreylitt/pry,shockone/pry,printercu/pry,josue804/debunker,jasonm23/pry,deivid-rodriguez/pry,gfvcastro/pry,bronzdoc/pry,shockone/pry,85x14/pry,tdg5/pry,pvdb/pry,raeno/pry,jasnow/pry,shockone/pry,caporta/pry,sferik/pry,bronzdoc/pry,ooohiroyukiooo/pry,jasnow/pry,geoffreylitt/pry,icebreaker/pry,pvdb/pry,ooohiroyukiooo/pry,jasonm23/pry,ooohiroyukiooo/pry,ngpestelos/pry,ngpestelos/pry,caporta/pry,icebreaker/pry,caporta/pry