exe/tf_mux in mux_tf-0.7.0 vs exe/tf_mux in mux_tf-0.7.1

@@ -9,8 +9,8 @@
 
   MuxTf::Cli.run(:mux, ARGV)
 rescue Exception => e
   warn e.full_message
   warn "<press enter>"
-  gets
+  $stdin.gets
   exit 1
 end