Merge pull request rapid7#1293 from wchen-r7/optint_valid

Fix OptInt's valid?() function

Author: HD Moore

lib/msf/core/option_container.rb

@@ -445,7 +445,7 @@ def normalize(value)
 	def valid?(value)
 		return false if empty_required_value?(value)
 
-		if value and not normalize(value).to_s.match(/^\d+$/)
+		if value and not value.to_s.match(/^\d+$/)
 			return false
 		end