Ensure stop_service closes Rex::Proto::Http::Server

Author: jvazquez-r7

lib/msf/core/exploit/tcp_server.rb

@@ -160,6 +160,11 @@ def stop_service
           self.service.close
           self.service.stop
         end
+
+        if service.kind_of?(Rex::Proto::Http::Server)
+          service.stop
+        end
+
         self.service = nil
       rescue ::Exception
       end