network: Only try to restart collectd if it is running

This updated version of this script avoids any errors if collectd is not
running (yet) which might happen during the boot process.

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

src/initscripts/networking/red.up/60-collectd

@@ -1,6 +1,8 @@
 #!/bin/bash
 
 # Restart collectd because the ping plugin does not re-resolve "gateway"
-exec /etc/init.d/collectd restart
+if pgrep collectd &>/dev/null; then
+	exec /etc/init.d/collectd restart &>/dev/null
+fi
 
-exit 1
+exit 0