ammend code to have less File.stat calls per event

Author: Pere Urbon-Bayes

lib/logstash/outputs/file.rb

@@ -220,14 +220,13 @@ def deleted?(path)
   def open(path)
     if !deleted?(path) && cached?(path)
       return @files[path]
-    elsif deleted?(path)
-      if @create_if_deleted
-        @logger.debug("Required path was deleted, creating the file again", :path => path)
-        @files.delete(path)
-      else
-        return @files[path] if cached?(path)
-      end
+    elsif @create_if_deleted && deleted?(path)
+      @logger.debug("Required path was deleted, creating the file again", :path => path)
+      @files.delete(path)
+    else
+      return @files[path] if cached?(path)
     end
+
     @logger.info("Opening file", :path => path)
 
     dir = File.dirname(path)