[gimp] app: fix brush outline position when snapping to stroke

[Ell <ell src gnome org>]

commit ea729f6d027aca13fbd906a3c5efef563ab3f427
Author: Ell <ell_se yahoo com>
Date:   Fri Feb 14 21:48:32 2020 +0200

    app: fix brush outline position when snapping to stroke
    
    In GimpPaintTool, fix the brush outline position while painting,
    when "Snap brush outline to stroke" is enabled.

 app/tools/gimppainttool-paint.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/app/tools/gimppainttool-paint.c b/app/tools/gimppainttool-paint.c
index 81eb892ee4..88cd526b97 100644
--- a/app/tools/gimppainttool-paint.c
+++ b/app/tools/gimppainttool-paint.c
@@ -167,8 +167,8 @@ gimp_paint_tool_paint_timeout (GimpPaintTool *paint_tool)
 
   g_mutex_lock (&paint_mutex);
 
-  paint_tool->paint_x = core->cur_coords.x;
-  paint_tool->paint_y = core->cur_coords.y;
+  paint_tool->paint_x = core->last_paint.x;
+  paint_tool->paint_y = core->last_paint.y;
 
   update = gimp_drawable_flush_paint (drawable);