Use adjusted sp on `iseq_set_sequence()`

compile.c

@@ -2271,15 +2271,13 @@ iseq_set_sequence(rb_iseq_t *iseq, LINK_ANCHOR *const anchor)
 	  case ISEQ_ELEMENT_ADJUST:
 	    {
                 ADJUST *adjust = (ADJUST *)list;
-		if (adjust->line_no != -1) {
                 int orig_sp = sp;
                 sp = adjust->label ? adjust->label->sp : 0;
-		    if (orig_sp - sp > 0) {
+                if (adjust->line_no != -1 && orig_sp - sp > 0) {
                     if (orig_sp - sp > 1) code_index++; /* 1 operand */
                     code_index++; /* insn */
                     insn_num++;
                 }
-		}
 		break;
 	    }
 	  default: break;