cmd/6l: fix printing of frame size in TEXT instruction

R=ken2
CC=golang-dev
https://golang.org/cl/12827043

src/cmd/6l/list.c

@@ -61,6 +61,9 @@ Pconv(Fmt *fp)
 				p->line, p->as, &p->from, p->from.scale, &p->to);
 			break;
 		}
+		fmtprint(fp, "(%d)	%A	%D,%lD",
+			p->line, p->as, &p->from, &p->to);
+		break;
 	default:
 		fmtprint(fp, "(%d)	%A	%D,%D",
 			p->line, p->as, &p->from, &p->to);