Fix rapid7#9417, map timeout exp to a var for telnet_encrypt_overflow

Fix rapid7#9417

Author: wchen-r7

modules/auxiliary/scanner/telnet/telnet_encrypt_overflow.rb

@@ -127,7 +127,7 @@ def run_host(ip)
     rescue ::Rex::ConnectionError, ::Errno::ECONNRESET => e
       print_error("A network issue has occurred: #{e.message}")
       elog("#{e.class} #{e.message}\n#{e.backtrace * "\n"}")
-    rescue Timeout::Error
+    rescue Timeout::Error => e
       print_error("#{target_host}:#{rport} Timed out after #{to} seconds")
       elog("#{e.class} #{e.message}\n#{e.backtrace * "\n"}")
     rescue ::Exception => e