Fix changing virtual pixelsize having no affect if only main window is open

Changing virtual pixelsize only had an affect when a second window was open. (Was also possible to trigger update by opening another window.)

Steps to reproduce:
* Change any editor into user preferences *in main window*
* Change virtual pixel size -> nothing happens

2 files changed, 5 insertions, 6 deletions

diff --git a/source/blender/makesrna/intern/rna_userdef.c b/source/blender/makesrna/intern/rna_userdef.c
index f4c6fdf42f5..657a8a3f514 100644
--- a/source/blender/makesrna/intern/rna_userdef.c
+++ b/source/blender/makesrna/intern/rna_userdef.c
@@ -148,8 +148,7 @@ static void rna_userdef_virtual_pixel_update(Main *UNUSED(bmain), Scene *UNUSED(
 {
 	/* font's are stored at each DPI level, without this we can easy load 100's of fonts */
 	BLF_cache_clear();
-	
-	BKE_userdef_state();
+
 	WM_main_add_notifier(NC_WINDOW, NULL);      /* full redraw */
 	WM_main_add_notifier(NC_SCREEN | NA_EDITED, NULL);    /* refresh region sizes */
 }
diff --git a/source/blender/windowmanager/intern/wm_window.c b/source/blender/windowmanager/intern/wm_window.c
index 688be21cdd0..572fbac080d 100644
--- a/source/blender/windowmanager/intern/wm_window.c
+++ b/source/blender/windowmanager/intern/wm_window.c
@@ -831,11 +831,11 @@ void wm_window_make_drawable(wmWindowManager *wm, wmWindow *win)
 			printf("%s: set drawable %d\n", __func__, win->winid);
 		}
 		GHOST_ActivateWindowDrawingContext(win->ghostwin);
-		
-		/* this can change per window */
-		U.pixelsize = wm_window_pixelsize(win);
-		BKE_userdef_state();
 	}
+
+	/* this can change per window */
+	U.pixelsize = wm_window_pixelsize(win);
+	BKE_userdef_state();
 }
 
 /* called by ghost, here we handle events for windows themselves or send to event system */