Bugfix #4352

More Sequence render fixes:

- on load of .blend file, with Sequencer invoking a sequence render, the
  header window matrix was not set, giving "Insane icon" prints
- option "Do Sequence" had no re-display call in end

source/blender/render/intern/source/pipeline.c

@@ -1681,6 +1681,10 @@ static void do_render_all_options(Render *re)
 	if(re->r.scemode & R_DOSEQ) {
 		if(!re->test_break()) 
 			do_render_seq(re->result, re->r.cfra);
+		
+		re->stats_draw(&re->i);
+		re->display_draw(re->result, NULL);
+		
 	}
 	else {
 		if(re->r.renderer==R_YAFRAY)

source/blender/src/editscreen.c

@@ -1783,7 +1783,9 @@ static void openheadwin(ScrArea *sa)
 
 	glMatrixMode(GL_MODELVIEW);
 	
-	areawinar[sa->headwin]= sa;	/* oterwise addqueue does not work */
+	areawinar[sa->headwin]= sa;	/* otherwise addqueue does not work */
+	
+	scrarea_do_headchange(sa);	/* headchange is no callback, apply right away. this is for render-to-imagewindow... this can be called on startup by sequencer, which invokes redraw before all events are handled. bad stuff... */
 	addqueue(sa->headwin, CHANGED, 1);
 }
 

source/blender/src/renderwin.c

@@ -1176,12 +1176,12 @@ void BIF_init_render_callbacks(Render *re)
 void BIF_end_render_callbacks(void)
 {
 	esc_timer_set--;
-	if(esc_timer_set==0)
+	if(esc_timer_set==0) {
 		end_test_break_callback();
-	
-	if(render_win)
-		mainwindow_make_active();
-
+		
+		if(render_win)
+			mainwindow_make_active();
+	}
 }
 
 /* set up display, render an image or scene */