Whitespace cleanup

* remove trailing whitespace
* remove empty lines at the end of files

plugins/thin/thin_memory

@@ -4,8 +4,8 @@
 # For Linux ONLY !
 # DOES NOT WORK on OSX, Solaris or BSD.
 # only linux, because this script relies on proc filesystem
-# 
-# Original author: 
+#
+# Original author:
 #   Frederico de Souza Araujo - fred.the.master@gmail.com
 #   http://www.frederico-araujo.com
 #
@@ -14,20 +14,20 @@
 #   http://www.furbism.com
 #
 # Originally based on:
-#   thin_process_memory - 
-#       A munin plugin to monitor memory size of 
+#   thin_process_memory -
+#       A munin plugin to monitor memory size of
 #       each individual thin process
 #   by Ben VandenBos and Avvo, Inc.
 #
 # This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License version 2 
+# it under the terms of the GNU General Public License version 2
 # as published by the Free Software Foundation.
-# 
+#
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU General Public License along
 # with this program; if not, write to the Free Software Foundation, Inc.,
 # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
@@ -38,7 +38,7 @@
 
 module Munin
   class ThinProcessMemory
-    
+
     # run main method
     def run
       instances = get_pids()
@@ -48,7 +48,7 @@ module Munin
         puts "thin_#{port}.value #{rss}"
       end
     end
-    
+
     # only get the memory for each pid
     def pid_rss(pid)
       res = `grep "VmRSS" /proc/#{pid}/status`.split[1]
@@ -58,7 +58,7 @@ module Munin
         return res
       end
     end
-    
+
     # fetch all pids that match thin
     def get_pids
       pids = `pgrep -f 'thin' -l | awk -F " " '{ if (substr( $4, 10, 4)>=1) print $1"|"substr( $4, 10, 4)}' | sort -t'|' -nk 2`.split(/\r?\n/)
@@ -67,7 +67,7 @@ module Munin
     def autoconf
       get_pids().length > 0
     end
-    
+
   end
 end