[evolution] Bug 788450 - Correct typo in e_cal_model_get_default_source_uid()

[Milan Crha <mcrha src gnome org>]

commit 419b14250bb2b2ed0efa6fb4b471cbeea466e7d5
Author: Milan Crha <mcrha redhat com>
Date:   Tue Oct 3 12:42:43 2017 +0200

    Bug 788450 - Correct typo in e_cal_model_get_default_source_uid()

 src/calendar/gui/e-cal-model.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/calendar/gui/e-cal-model.c b/src/calendar/gui/e-cal-model.c
index 696ad8d..50195b7 100644
--- a/src/calendar/gui/e-cal-model.c
+++ b/src/calendar/gui/e-cal-model.c
@@ -3580,7 +3580,7 @@ e_cal_model_get_default_source_uid (ECalModel *model)
        g_return_val_if_fail (model != NULL, NULL);
        g_return_val_if_fail (E_IS_CAL_MODEL (model), NULL);
 
-       if (model->priv->default_source_uid && !model->priv->default_source_uid)
+       if (model->priv->default_source_uid && !*model->priv->default_source_uid)
                return NULL;
 
        return model->priv->default_source_uid;