Bug 811720 - Detach touch adapter when deactivating. r=eeejay

accessible/src/jsat/AccessFu.jsm

@@ -116,6 +116,7 @@ this.AccessFu = {
       mm.sendAsyncMessage('AccessFu:Stop');
 
     Input.detach();
+    this.touchAdapter.detach(this.chromeWin);
 
     this.chromeWin.removeEventListener('TabOpen', this);
     this.chromeWin.removeEventListener('TabSelect', this);