change vprint_error to print_error

exploits/windows/browser/mozilla_reduceright does not tell you when an
incompatible browser connects like most other browser exploits do
(unless verbose is true).  This change just changes the vprint to print
to be more consistent w/other browser exploits

Author: kernelsmith

modules/exploits/windows/browser/mozilla_reduceright.rb

@@ -94,7 +94,7 @@ def junk(n=4)
 	def on_request_uri(cli, request)
 		agent = request.headers['User-Agent']
 		if agent !~ /Firefox\/3\.6\.[16|17]/
-			vprint_error("This browser is not supported: #{agent.to_s}")
+			print_error("This browser is not supported: #{agent.to_s}")
 			send_not_found(cli)
 			return
 		end