Fixed segfault when looking for implementations of methods in interfaces
Fixed segfault when looking for implementations of methods in interfaces

zhaihj/rock,ooc-lang/rock,fasterthanlime/rock,ds84182/rock,jonathanudd/rock,thomasfanell/rock,davidhesselbom/rock,marcusnaslund/rock,magic-lang/rock,marcusnaslund/rock,cogneco/rock,thomasfanell/rock,ooc-lang/rock,davidhesselbom/rock,fasterthanlime/rock,shamanas/rock,fredrikbryntesson/rock,magic-lang/rock,shamanas/rock,ds84182/rock,zhaihj/rock,fredrikbryntesson/rock,kirbyfan64/rock,cogneco/rock,jonathanudd/rock,kirbyfan64/rock