[evolution-ews] Revert "Fix "assignment from incompatible pointer type" warning"

[Fabiano Fidêncio <ffidencio src gnome org>]

commit d315dbc75f4496a2d493496de6a8e25637e8b852
Author: Fabiano Fidêncio <fidencio redhat com>
Date:   Wed Nov 6 08:37:09 2013 +0100

    Revert "Fix "assignment from incompatible pointer type" warning"
    
    This reverts commit 8ae531166669a86adfaf97dad5fcd20f3a522d8d.
    Already fixed in Evolution-Data-Server's side

 src/camel/camel-ews-folder.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/src/camel/camel-ews-folder.c b/src/camel/camel-ews-folder.c
index ecda948..7912eca 100644
--- a/src/camel/camel-ews-folder.c
+++ b/src/camel/camel-ews-folder.c
@@ -150,8 +150,8 @@ ews_data_cache_get (CamelDataCache *cdc,
        GIOStream *base_stream;
 
        g_checksum_update (sha, (guchar *) key, strlen (key));
-       base_stream = G_IO_STREAM (camel_data_cache_get (
-               cdc, path, g_checksum_get_string (sha), error));
+       base_stream = camel_data_cache_get (
+               cdc, path, g_checksum_get_string (sha), error);
        if (base_stream != NULL) {
                stream = camel_stream_new (base_stream);
                g_object_unref (base_stream);