add translators comment explaining the insufficient balance error (#649735)

diff --git a/libempathy-gtk/empathy-chat.c b/libempathy-gtk/empathy-chat.c
index 3e8a9c70bcf1c5dfcdd366de714bfb490820550b..b580812accfb14910af8ec9bae3fbce0646503cb 100644 (file)
--- a/libempathy-gtk/empathy-chat.c
+++ b/libempathy-gtk/empathy-chat.c
@@ -1294,6 +1294,8 @@ chat_send_error_cb (EmpathyTpChat          *tp_chat,
        gchar       *str;
 
        if (!tp_strdiff (dbus_error, TP_ERROR_STR_INSUFFICIENT_BALANCE)) {
+               /* translators: error used when user doesn't have enough credit on his
+                * account to send the message. */
                error = _("insufficient balance to send message");
        } else if (!tp_strdiff (dbus_error, TP_ERROR_STR_NOT_CAPABLE)) {
                error = _("not capable");