Avoid looking up the same precomp id multiple times
Avoid looking up the same precomp id multiple times

If we have already loaded a precomp file, there's no need to search the precomp
stores for its id as we already deemed it up-to-date once and would not load it
again anyway.
Brings down compilation time of a real world code base from 14 to 13 seconds.

nbrown/rakudo,rakudo/rakudo,tony-o/rakudo,tony-o/rakudo,labster/rakudo,rakudo/rakudo,tbrowder/rakudo,tbrowder/rakudo,softmoth/rakudo,salortiz/rakudo,salortiz/rakudo,labster/rakudo,tony-o/rakudo,MasterDuke17/rakudo,softmoth/rakudo,MasterDuke17/rakudo,salortiz/rakudo,tbrowder/rakudo,softmoth/rakudo,nbrown/rakudo,MasterDuke17/rakudo,rakudo/rakudo,nbrown/rakudo,salortiz/rakudo,rakudo/rakudo,nbrown/rakudo,MasterDuke17/rakudo,labster/rakudo,rakudo/rakudo,nbrown/rakudo,salortiz/rakudo,labster/rakudo,labster/rakudo,MasterDuke17/rakudo,nbrown/rakudo,tbrowder/rakudo,tony-o/rakudo,salortiz/rakudo,softmoth/rakudo,softmoth/rakudo,tony-o/rakudo,rakudo/rakudo,MasterDuke17/rakudo,tbrowder/rakudo,labster/rakudo,tbrowder/rakudo,tony-o/rakudo