Description: Use Debian's licence path
Author: Mateusz Łukasik <mati75@linuxmint.pl>
--- a/plugins/gtkui/callbacks.c
+++ b/plugins/gtkui/callbacks.c
@@ -376,7 +376,7 @@ on_gpl1_activate                       (
                                         gpointer         user_data)
 {
     char fname[PATH_MAX];
-    snprintf (fname, sizeof (fname), "%s/%s", deadbeef->get_doc_dir (), "COPYING.GPLv2");
+    snprintf (fname, sizeof (fname), "%s", "/usr/share/common-licenses/GPL-2");
     gtkui_show_info_window (fname, "GNU GENERAL PUBLIC LICENSE Version 2", &gplwindow);
 }
 
@@ -387,7 +387,7 @@ on_lgpl1_activate                      (
                                         gpointer         user_data)
 {
     char fname[PATH_MAX];
-    snprintf (fname, sizeof (fname), "%s/%s", deadbeef->get_doc_dir (), "COPYING.LGPLv2.1");
+    snprintf (fname, sizeof (fname), "%s", "/usr/share/common-licenses/LGPL-2.1");
     gtkui_show_info_window (fname, "GNU LESSER GENERAL PUBLIC LICENSE Version 2.1", &lgplwindow);
 }