[eog] EogScrollView: Prevent a crash when queueing a new draw

[Felix Riemann <friemann src gnome org>]

commit 8169e0ac6447ebeb1d1e809213ce82b814b62550
Author: Debarshi Ray <debarshir gnome org>
Date:   Thu Apr 7 20:13:16 2016 +0200

    EogScrollView: Prevent a crash when queueing a new draw
    
    Fall out from 88c4f54eb9cee69b1eebef462df27f76119bec62
    
    https://bugzilla.gnome.org/show_bug.cgi?id=665897

 src/eog-scroll-view.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/src/eog-scroll-view.c b/src/eog-scroll-view.c
index 4539498..f85d9d2 100644
--- a/src/eog-scroll-view.c
+++ b/src/eog-scroll-view.c
@@ -1260,6 +1260,7 @@ static gboolean _hq_redraw_cb (gpointer user_data)
        priv->force_unfiltered = FALSE;
        gtk_widget_queue_draw (GTK_WIDGET (priv->display));
 
+       priv->hq_redraw_timeout_source = NULL;
        return G_SOURCE_REMOVE;
 }