codegen.c: refactor `mrb_last_insn()`.
Last commit made `mrb_decode_insn()` to take `NULL` as `pc`.
@@ -470,14 +470,7 @@ rewind_pc(codegen_scope *s)
static struct mrb_insn_data
mrb_last_insn(codegen_scope *s)
{
- const mrb_code *pc = mrb_prev_pc(s, pc_addr(s));
- if (pc == NULL) {
- struct mrb_insn_data data;
-
- data.insn = OP_NOP;
- return data;
- }
- return mrb_decode_insn(pc);
+ return mrb_decode_insn(mrb_prev_pc(s, pc_addr(s)));
}
static mrb_bool
