fix from forsyth via rob

src/cmd/comm.c

diff --git a/src/cmd/comm.c b/src/cmd/comm.c
index b95b9a0..cce02ff 100644
--- a/src/cmd/comm.c
+++ b/src/cmd/comm.c
@@ -23,7 +23,7 @@
 	int l;
 	char	lb1[LB],lb2[LB];
 
-	l = 2;
+	l = 1;
 	ARGBEGIN{
 	case '1':
 		if(!one) {