misc: Avoid some navigation warnings that can crop up when images

are actively loading in the background.

Author: mtwebster

src/xviewer-thumb-view.c

@@ -1021,10 +1021,12 @@ xviewer_thumb_view_select_single (XviewerThumbView *thumbview,
 		}
 	}
 
-	gtk_icon_view_select_path (GTK_ICON_VIEW (thumbview), path);
-	gtk_icon_view_set_cursor (GTK_ICON_VIEW (thumbview), path, NULL, FALSE);
-	gtk_icon_view_scroll_to_path (GTK_ICON_VIEW (thumbview), path, FALSE, 0, 0);
-	gtk_tree_path_free (path);
+    if (path != NULL) {
+        gtk_icon_view_select_path (GTK_ICON_VIEW (thumbview), path);
+        gtk_icon_view_set_cursor (GTK_ICON_VIEW (thumbview), path, NULL, FALSE);
+        gtk_icon_view_scroll_to_path (GTK_ICON_VIEW (thumbview), path, FALSE, 0, 0);
+        gtk_tree_path_free (path);
+    }
 }
 
 

src/xviewer-window.c

@@ -495,7 +495,7 @@ update_image_pos (XviewerWindow *window)
 
 	n_images = xviewer_list_store_length (XVIEWER_LIST_STORE (priv->store));
 
-	if (n_images > 0) {
+	if (priv->image != NULL && n_images > 0) {
 		pos = xviewer_list_store_get_pos_by_image (XVIEWER_LIST_STORE (priv->store),
 						       priv->image);
 	}