Patch for varnish-3.0.2-0ubuntu0.1 to enable safe stop

varnish.init.patch

--- debian/varnish.init	2016-12-13 01:13:34.465123880 +0000
+++ debian/varnish.init.new	2016-12-13 01:18:50.215749771 +0000
@@ -88,8 +88,10 @@
     log_daemon_msg "Reloading $DESC" "$NAME"
     if /usr/share/varnish/reload-vcl -q; then
         log_end_msg 0
+        return 0
     else
         log_end_msg 1
+        return 1
     fi
 }

@@ -112,7 +114,12 @@
         esac
         ;;
     stop)
-        stop_varnishd
+        if reload_varnishd; then
+            stop_varnishd
+        else
+            log_daemon_msg "Refusing to stop $NAME due to invalid config on disk"
+            exit 1
+        fi
         ;;
     reload)
         reload_varnishd
@@ -121,7 +128,7 @@
         status_varnishd
         ;;
     restart|force-reload)
-        $0 stop
+        $0 stop && \
         $0 start
         ;;
     *)