configuration: convert file paths from relative to absolute if necessary

lib/wp/configuration.c

@@ -282,6 +282,7 @@ wp_configuration_reload (WpConfiguration *self, const char *extension)
   GDir *conf_dir = NULL;
   GError *error = NULL;
   const gchar *file_name = NULL;
+  g_autofree gchar *cwd = g_get_current_dir ();
 
   g_return_if_fail (WP_IS_CONFIGURATION (self));
 
@@ -330,7 +331,10 @@ wp_configuration_reload (WpConfiguration *self, const char *extension)
     while ((file_name = g_dir_read_name (conf_dir))) {
       /* Only parse files that have the proper extension */
       if (g_str_has_suffix (file_name, ext)) {
-        g_autofree gchar * location = g_build_filename (path, file_name, NULL);
+        g_autofree gchar * location =
+            g_path_is_absolute (path) ?
+            g_build_filename (path, file_name, NULL) :
+            g_build_filename (cwd, path, file_name, NULL);
 
         wp_debug_object (self, "loading config file: %s", location);