forward port a disgusting hack from 2.X that stops the timefx thread's exiting from preventing its request event pool being marked dead too soon

git-svn-id: svn://localhost/ardour2/branches/3.0@9431 d708f5d6-7413-0410-9779-e7cbd77b26cf

gtk2_ardour/editor_timefx.cc

@@ -20,6 +20,7 @@
 #include <iostream>
 #include <cstdlib>
 #include <cmath>
+#include <ctime>
 
 #include <string>
 
@@ -365,6 +366,14 @@ Editor::timefx_thread (void *arg)
 
 	tsd->editor.do_timefx (*tsd);
 
+        /* GACK! HACK! sleep for a bit so that our request buffer for the GUI
+           event loop doesn't die before any changes we made are processed
+           by the GUI ...
+        */
+
+        struct timespec t = { 2, 0 };
+        nanosleep (&t, 0);
+
 	return 0;
 }