Tell grep to be quiet.

config/chroot_local-includes/usr/local/sbin/unsafe-browser

@@ -101,7 +101,7 @@ if [ -r "${NM_ENV_FILE}" ]; then
     # is far from perfect, it serves our purpose here.
     IP4_REGEX='[0-9]\{1,3\}\(\.[0-9]\{1,3\}\)\{3\}'
     NAMESERVERS_REGEX="^IP4_NAMESERVERS=\"${IP4_REGEX}\"$"
-    if grep -v "${NAMESERVERS_REGEX}" "${NM_ENV_FILE}"; then
+    if grep -qv "${NAMESERVERS_REGEX}" "${NM_ENV_FILE}"; then
         error "`gettext \"NetworkManager passed us garbage data when trying to deduce the clearnet DNS server.\"`"
     fi
     # Import the IP4_NAMESERVERS variable.