Eliminated "handled" field in Parser::Action

This field was used during development to measure the
coverage of the ANSI terminal parser against typical
terminal input sequences.

The "handled" field has not been read by any code since
commit 1ee54cd7 (February 2011). Eliminating the field
by popular request (closes #723).

src/terminal/terminalfunctions.cc

@@ -557,7 +557,7 @@ static void CSI_DECSTR( Framebuffer *fb, Dispatcher *dispatch __attribute((unuse
 static Function func_CSI_DECSTR( CSI, "!p", CSI_DECSTR );
 
 /* xterm uses an Operating System Command to set the window title */
-void Dispatcher::OSC_dispatch( const Parser::OSC_End *act, Framebuffer *fb )
+void Dispatcher::OSC_dispatch( const Parser::OSC_End *act __attribute((unused)), Framebuffer *fb )
 {
   if ( OSC_string.size() >= 1 ) {
     long cmd_num = -1;
@@ -581,8 +581,6 @@ void Dispatcher::OSC_dispatch( const Parser::OSC_End *act, Framebuffer *fb )
       Terminal::Framebuffer::title_type newtitle( OSC_string.begin() + offset, OSC_string.end() );
       if ( set_icon )  { fb->set_icon_name( newtitle ); }
       if ( set_title ) { fb->set_window_title( newtitle ); }
-
-      act->handled = true;
     }
   }
 }