Ruby plugins: apply code changes as suggested by "rubocop --auto-correct"

plugins/http/mongrel_memory

@@ -34,33 +34,32 @@ Contributors: Adam Jacob (<adam@hjksolutions.com>)
 
 =end
 
-
 module Munin
   class MongrelProcessMemory
     def run
-      pid_port_map = get_pids()
-      port_list = Hash.new
+      pid_port_map = get_pids
+      port_list = {}
       pid_port_map.sort.each do |pid, port|
-        rss = `pmap -x #{pid} | grep total`.split(" ")[3]
+        rss = `pmap -x #{pid} | grep total`.split(' ')[3]
         puts "mongrel_#{port}.value #{rss}"
       end
     end
 
     def get_pids
-      h = Hash.new
+      h = {}
       pids = []
       pids += `pgrep mongrel_rails`.split("\n")
       pids += `pgrep ruby`.split("\n")
-      pids.each { |pid|
+      pids.each do |pid|
         l = `pargs -l #{pid}`
         l =~ /-p (\d+)/
-        h[pid] = $1 if $1
-      }
+        h[pid] = Regexp.last_match(1) if Regexp.last_match(1)
+      end
       h
     end
 
     def autoconf
-      get_pids().length > 0
+      get_pids.length > 0
     end
   end
 end
@@ -68,25 +67,25 @@ end
 mpm = Munin::MongrelProcessMemory.new
 
 case ARGV[0]
-when "config"
-  puts "graph_title Mongrel Memory"
-  puts "graph_vlabel RSS"
-  puts "graph_category memory"
-  puts "graph_args --base 1024 -l 0"
-  puts "graph_scale yes"
-  puts "graph_info Tracks the size of individual mongrel processes"
+when 'config'
+  puts 'graph_title Mongrel Memory'
+  puts 'graph_vlabel RSS'
+  puts 'graph_category memory'
+  puts 'graph_args --base 1024 -l 0'
+  puts 'graph_scale yes'
+  puts 'graph_info Tracks the size of individual mongrel processes'
   mpm.get_pids.values.sort.each do |port|
     puts "mongrel_#{port}.label mongrel_#{port}"
     puts "mongrel_#{port}.info Process memory"
     puts "mongrel_#{port}.type GAUGE"
     puts "mongrel_#{port}.min 0"
   end
-when "autoconf"
+when 'autoconf'
   if mpm.autoconf
-    puts "yes"
+    puts 'yes'
     exit 0
   end
-  puts "no"
+  puts 'no'
   exit 0
 else
   mpm.run