From: H.G.Muller <hgm@hgm-xboard.(none)>
Date: Wed, 20 Apr 2016 21:56:31 +0000 (+0200)
Subject: Make preview resistent to nothing being selected
X-Git-Url: http://winboard.nl/cgi-bin?a=commitdiff_plain;h=e13fd4c370773a8f4ddb364f7102caceb1513ea7;p=xboard.git

Make preview resistent to nothing being selected

The name of the selected file could be a null pointer, and ScaleOnePiece
does not like that for a pieceImageDirectory.
---

diff --git a/gtk/xoptions.c b/gtk/xoptions.c
index a12a050..f64a2d5 100644
--- a/gtk/xoptions.c
+++ b/gtk/xoptions.c
@@ -1110,9 +1110,11 @@ BrowseCallback (GtkFileChooser *chooser, gpointer data)
     char *name = gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(chooser));
     Option *opt = currentOption + (int)(intptr_t) data;
     int n = (int) (intptr_t) opt->choice;
-    Preview(n, name);
-    messedUp = TRUE;
-    if(name) g_free(name);
+    if(name) {
+	Preview(n, name);
+	messedUp = TRUE;
+	g_free(name);
+    }
     return FALSE;
 }