Filter clear screen character out of stderr as well

CHANGELOG.md

@@ -2,6 +2,7 @@
 
   - Fix `forward_agent` not working when outside of blocks. [GH-651]
   - Fix issue causing custom guest implementations to not load properly.
+  - Filter clear screen character out of output on SSH.
 
 ## 0.9.1 (January 18, 2012)
 

lib/vagrant/communication/ssh.rb

@@ -167,13 +167,19 @@ module Vagrant
           ch.exec(shell) do |ch2, _|
             # Setup the channel callbacks so we can get data and exit status
             ch2.on_data do |ch3, data|
-              # Filter out the clear screen command
-              data.gsub!("\e[H", "")
-              yield :stdout, data if block_given?
+              if block_given?
+                # Filter out the clear screen command
+                data.gsub!("\e[H", "")
+                yield :stdout, data
+              end
             end
 
             ch2.on_extended_data do |ch3, type, data|
-              yield :stderr, data if block_given?
+              if block_given?
+                # Filter out the clear screen command
+                data.gsub!("\e[H", "")
+                yield :stderr, data
+              end
             end
 
             ch2.on_request("exit-status") do |ch3, data|