[nautilus] view-icon-controller: stop trying to reveal nothing

[Ernestas Kulik <ernestask src gnome org>]

commit 9078c2cec129f6d95e444f3cbf69ab84e6627f46
Author: Ernestas Kulik <ernestask gnome org>
Date:   Thu Mar 30 20:58:40 2017 +0300

    view-icon-controller: stop trying to reveal nothing
    
    Currently, the flow view tries to reveal the selection even if it is
    empty. That can result in a crash if the selection is empty.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=780732

 src/nautilus-view-icon-controller.c |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)
---
diff --git a/src/nautilus-view-icon-controller.c b/src/nautilus-view-icon-controller.c
index c925352..b082368 100644
--- a/src/nautilus-view-icon-controller.c
+++ b/src/nautilus-view-icon-controller.c
@@ -399,6 +399,11 @@ real_reveal_selection (NautilusFilesView *files_view)
     GtkAdjustment *vadjustment;
 
     selection = nautilus_view_get_selection (NAUTILUS_VIEW (files_view));
+    if (selection == NULL)
+    {
+        return;
+    }
+
     item_model = nautilus_view_model_get_item_from_file (self->model,
                                                          NAUTILUS_FILE (selection->data));
     item_ui = nautilus_view_item_model_get_item_ui (item_model);