Fix two compiler warnings in /sys/lib/dist/cmd.

8c -FTVw -p -I/sys/src/cmd/bzip2/lib unbzip.c
warning: /sys/lib/dist/cmd/bzfs/unbzip.c:[unbzip.c:1655] unreachable code RETURN

8c -FTVw bargraph.c
warning: bargraph.c:43 auto declared and not used: s

Reference: /n/sources/patch/applied/dist-cmd-warn
Date: Wed Dec 19 21:58:46 CET 2012
Signed-off-by: djc@9grid.fr

--- /sys/lib/dist/cmd/bzfs/unbzip.c	Wed Dec 19 21:58:26 2012
+++ /sys/lib/dist/cmd/bzfs/unbzip.c	Wed Dec 19 21:58:22 2012
@@ -302,7 +302,6 @@
 		if (s->strm->total_in_lo32 == 0)
 			s->strm->total_in_hi32++;
 	}
-	return -1;	/* KEN */
 }
 
 #define GET_UCHAR(lll,uuu)                        \
--- /sys/lib/dist/cmd/bargraph.c	Wed Dec 19 21:58:31 2012
+++ /sys/lib/dist/cmd/bargraph.c	Wed Dec 19 21:58:28 2012
@@ -40,7 +40,7 @@
 {
 	int i, j;
 	int p;
-	char buf[200], bar[100], *s;
+	char buf[200], bar[100];
 	static char lastbar[100];
 
 	if(n > d || n < 0 || d <= 0)