Sort the nodes by last update on reload

Reloading sets the node queue to the original order. If Oxidized was restarted,
collected a couple of nodes, and was then reloaded, the new queue would have a node
with a recent last end time.
Thus, no new nodes would be collected until the first one passed its interval.
Here the nodes are sorted on reload, to maintain the queue invariant.

1 files changed, 1 insertions, 0 deletions

diff --git a/lib/oxidized/nodes.rb b/lib/oxidized/nodes.rb
index 0c02d7a..61d2d44 100644
--- a/lib/oxidized/nodes.rb
+++ b/lib/oxidized/nodes.rb
@@ -147,6 +147,7 @@ module Oxidized
         rescue  Oxidized::NodeNotFound
         end
       end
+      sort_by! { |x| x.last.nil? ? Time.new(0) : x.last.end }
     end
 
     public