Don't comment warnings. Don't put #warnings about warnings. _FIX_ warnings.

This fixes the warning, and makes the binary smaller out of sheer pique.
(Yes, since Manuel did this one it's nice tight code that took several
attempts to shrink, but I was ticked.)

Add the start of a test for uniq; this is about the first 1/3 of the
tests we need for full susv3 coverage of uniq.

testsuite/uniq.tests

@@ -0,0 +1,36 @@
+#!/bin/sh
+
+# SUSv3 compliant uniq tests.
+# Copyright 2005 by Rob Landley <rob@landley.net>
+# Licensed under GPL v2, see file LICENSE for details.
+
+# AUDIT: Not full coverage of the spec yet.
+
+if [ ${#COMMAND} -eq 0 ]; then COMMAND=uniq; fi
+. testing.sh
+
+# The basic tests.  These should work even with the small busybox.
+#-f skip fields
+#-s skip chars
+#-c occurrences
+#-d dups only
+#-u 
+testing "uniq (default to stdin)" "" "one\ntwo\nthree\n" "" \
+	"one\ntwo\ntwo\nthree\nthree\nthree\n"
+testing "uniq - (specify stdin)" "-" "one\ntwo\nthree\n" "" \
+	"one\ntwo\ntwo\nthree\nthree\nthree\n"
+testing "uniq input (specify file)" "input" "one\ntwo\nthree\n" \
+	"one\ntwo\ntwo\nthree\nthree\nthree\n" ""
+testing "uniq input outfile (two files)" "input actual > /dev/null" \
+	"one\ntwo\nthree\n" "one\ntwo\ntwo\nthree\nthree\nthree\n" ""
+#testing "uniq - outfile" "- outfile" "one\ntwo\nthree\n" \
+#	"one\ntwo\ntwo\nthree\nthree\nthree\n" ""
+
+testing "uniq -d" "-d" "two\nthree\n" "" \
+	"one\ntwo\ntwo\nthree\nthree\nthree\n"
+testing "uniq -c" "-c" "      1 one\n      2 two\n      3 three\n" "" \
+	"one\ntwo\ntwo\nthree\nthree\nthree\n"
+# testing "uniq -c -d"
+# testing "uniq infile"
+
+exit $FAILCOUNT