[evolution-data-server] CamelIMAPXCommand: Add imapx_command_ref().

[Matthew Barnes <mbarnes src gnome org>]

commit 9a79d993cd5dfb56d726515fa20f71e911a2405c
Author: Matthew Barnes <mbarnes redhat com>
Date:   Thu Dec 1 22:12:00 2011 -0600

    CamelIMAPXCommand: Add imapx_command_ref().

 camel/providers/imapx/camel-imapx-server.c |   11 +++++++++++
 1 files changed, 11 insertions(+), 0 deletions(-)
---
diff --git a/camel/providers/imapx/camel-imapx-server.c b/camel/providers/imapx/camel-imapx-server.c
index b84fe8b..e86cbcf 100644
--- a/camel/providers/imapx/camel-imapx-server.c
+++ b/camel/providers/imapx/camel-imapx-server.c
@@ -806,6 +806,17 @@ imapx_command_add (CamelIMAPXCommand *ic,
 	}
 }
 
+static CamelIMAPXCommand *
+imapx_command_ref (CamelIMAPXCommand *ic)
+{
+	g_return_val_if_fail (ic != NULL, NULL);
+	g_return_val_if_fail (ic->ref_count > 0, NULL);
+
+	g_atomic_int_inc (&ic->ref_count);
+
+	return ic;
+}
+
 static void
 imapx_command_free (CamelIMAPXCommand *ic)
 {