One more attempt to fix the memory leak

Gemfile.lock

@@ -1,6 +1,6 @@
 GIT
   remote: git://github.com/sickill/tsm.git
-  revision: db53f053195c0dc117689a626bb321381c3bfbe8
+  revision: 13841c34e7320807eda25086c430b8501d1c7bae
   specs:
     tsm (0.1.0)
       ffi (~> 1.8)

app/models/terminal.rb

@@ -33,6 +33,11 @@ class Terminal
     lines
   end
 
+  def release
+    screen.release
+    vte.release
+  end
+
   private
 
   attr_reader :screen, :vte

app/services/snapshot_creator.rb

@@ -4,8 +4,10 @@ class SnapshotCreator
     terminal = Terminal.new(width, height)
     seconds = (duration / 2).to_i
     bytes = stdout.bytes_until(seconds)
+    snapshot = terminal.feed(bytes)
+    terminal.release
 
-    terminal.feed(bytes)
+    snapshot
   end
 
 end

spec/services/snapshot_creator_spec.rb

@@ -6,7 +6,7 @@ describe SnapshotCreator do
 
   describe '#create' do
     let(:stdout) { double('stdout', :bytes_until => []) }
-    let(:terminal) { double('terminal', :feed => snapshot) }
+    let(:terminal) { double('terminal', :feed => snapshot, :release => nil) }
     let(:snapshot) { double('snapshot') }
 
     subject { snapshot_creator.create(80, 24, stdout, 31.4) }