stupid port bug.  cannot use %ld to print a long as a *CHARACTER*

src/cmd/troff/t10.c

diff --git a/src/cmd/troff/t10.c b/src/cmd/troff/t10.c
index 0022cc7..38090ea 100644
--- a/src/cmd/troff/t10.c
+++ b/src/cmd/troff/t10.c
@@ -301,7 +301,7 @@
 			pi[1] = '~';
 		case DRAWSPLINE:	/* spline */
 		default:	/* something else; copy it like spline */
-			OUT "D%ld %d %d", cbits(pi[1]), dx, dy PUT;
+			OUT "D%c %d %d", (char)cbits(pi[1]), dx, dy PUT;
 			hpos += dx;
 			vpos += dy;
 			if (cbits(pi[3]) == DRAWFCN || cbits(pi[4]) == DRAWFCN) {