[gnome-calendar/gnome-41] week-grid: Don't emit 'create-event' on invalid selection

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit 90a613e2fcce16ab8a3638d4c09a3ee0f2ef6620
Author: Adrien Plazas <kekun plazas laposte net>
Date:   Fri Mar 4 08:26:22 2022 +0100

    week-grid: Don't emit 'create-event' on invalid selection
    
    This avoids the signal to be emitted after a scroll from the
    touchscreen.

 src/gui/views/gcal-week-grid.c | 4 ++++
 1 file changed, 4 insertions(+)
---
diff --git a/src/gui/views/gcal-week-grid.c b/src/gui/views/gcal-week-grid.c
index 8df2a5e4..18e8871a 100644
--- a/src/gui/views/gcal-week-grid.c
+++ b/src/gui/views/gcal-week-grid.c
@@ -776,6 +776,10 @@ gcal_week_grid_button_release (GtkWidget      *widget,
   gint out_y;
 
   self = GCAL_WEEK_GRID (widget);
+
+  if (self->selection_start == -1 || self->selection_end == -1)
+    return GDK_EVENT_STOP;
+
   ltr = gtk_widget_get_direction (widget) != GTK_TEXT_DIR_RTL;
 
   gtk_widget_get_allocation (widget, &alloc);