avoid setgmentation fault when arrayType expr is null
avoid setgmentation fault when arrayType expr is null

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