srd.c: Fix a compiler warning with gcc 8.

  srd.c: In function ‘srd_searchpaths_get’:
  srd.c:399:40: warning: cast between incompatible function types from ‘gchar * (*)(const gchar *)’ {aka ‘char * (*)(const char *)’} to ‘void * (*)(const void *, void *)’ [-Wcast-function-type]
    return g_slist_copy_deep(searchpaths, (GCopyFunc)g_strdup, NULL);
                                          ^

Upstream glib issue / documentation change:
https://gitlab.gnome.org/GNOME/glib/issues/1492
https://gitlab.gnome.org/pwithnall/glib/commit/e81f4c2acea5ada6ae989426e462613f7c612cac

1 files changed, 6 insertions, 1 deletions

diff --git a/srd.c b/srd.c
index 5903c6d..eb29f61 100644
--- a/srd.c
+++ b/srd.c
@@ -396,7 +396,12 @@ err:
  */
 SRD_API GSList *srd_searchpaths_get(void)
 {
-	return g_slist_copy_deep(searchpaths, (GCopyFunc)g_strdup, NULL);
+	GSList *paths = NULL;
+
+	for (GSList *l = searchpaths; l; l = l->next)
+		paths = g_slist_append(paths, g_strdup(l->data));
+
+	return paths;
 }
 
 /** @} */