ls: fix --color handling. Closes bug 435.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/testsuite/ls/ls-1-works b/testsuite/ls/ls-1-works
index 8ad484f..8856949 100644
--- a/testsuite/ls/ls-1-works
+++ b/testsuite/ls/ls-1-works
@@ -1,4 +1,4 @@
 [ -n "$d" ] || d=..
-ls -1 "$d" > logfile.gnu
-busybox ls -1 "$d" > logfile.bb
-cmp logfile.gnu logfile.bb
+LC_ALL=C ls -1 "$d" > logfile.gnu
+LC_ALL=C busybox ls -1 "$d" > logfile.bb
+diff -ubw logfile.gnu logfile.bb