Move config function to avoid predeclaration

telegram.c

@@ -63,6 +63,18 @@ void telegram_change_state(struct telegram *instance, int state, void *data)
     } while ((curr = g_list_next(change_listeners)) != NULL);
 }
 
+/**
+ * Calculate the configuration path for the given config file and the given instance
+ *
+ * @returns The full path to the configuration. 
+ *
+ * NOTE: the returned string must be freed manually using gfree
+ */
+char *telegram_get_config(struct telegram *instance, char *config)
+{
+    return g_strdup_printf("%s/%s", instance->config_path, config);
+}
+
 /**
  * Handle state changes of the telegram instance
  *
@@ -254,11 +266,6 @@ void telegram_store_session(struct telegram *instance)
     write_state_file(&instance->proto, instance->state_path);
 }
 
-char *telegram_get_config(struct telegram *instance, char *config)
-{
-    return g_strdup_printf("%s/%s", instance->config_path, config);
-}
-
 void on_authorized(struct mtproto_connection *c, void* data);
 
 /**

telegram.h

@@ -151,8 +151,6 @@ struct telegram *telegram_new(struct dc *DC, const char* login, const char* conf
  */
 void telegram_restore_session(struct telegram *instance);
 
-char *telegram_get_config(struct telegram *instance, char *config);
-
 /**
  * Store
  */