Clear exception when OP_RETURN
@@ -1361,8 +1361,9 @@ static inline int op_return( mrbc_vm *vm, mrbc_value *regs )
regs[0] = regs[a];
regs[a].tt = MRBC_TT_EMPTY;
- STOP_IF_TOPLEVEL();
+ vm->exc = mrbc_nil_value();
+ STOP_IF_TOPLEVEL();
mrbc_pop_callinfo(vm);
