[gnome-calendar] manager: fix style

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit 3f9731bf8953d9892494096043d958249ecc2dbc
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Sat Jun 10 08:29:36 2017 -0300

    manager: fix style

 src/gcal-manager.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/src/gcal-manager.c b/src/gcal-manager.c
index b3871e8..8724135 100644
--- a/src/gcal-manager.c
+++ b/src/gcal-manager.c
@@ -1802,8 +1802,8 @@ gcal_manager_remove_event (GcalManager    *manager,
 {
   GcalManagerUnit *unit;
   ECalComponent *component;
-  gchar* rid;
-  gchar* uid;
+  gchar *rid;
+  const gchar *uid;
 
   GCAL_ENTRY;