[evolution-data-server] imapx_untagged_fetch: Fix a possible divide-by-zero error.

[Matthew Barnes <mbarnes src gnome org>]

commit a9d05d991af32e442761a85d7e3676415ab807a4
Author: Matthew Barnes <mbarnes redhat com>
Date:   Wed Nov 6 07:51:49 2013 -0500

    imapx_untagged_fetch: Fix a possible divide-by-zero error.

 camel/providers/imapx/camel-imapx-server.c |    7 ++++---
 1 files changed, 4 insertions(+), 3 deletions(-)
---
diff --git a/camel/providers/imapx/camel-imapx-server.c b/camel/providers/imapx/camel-imapx-server.c
index 2d38704..cda7bb1 100644
--- a/camel/providers/imapx/camel-imapx-server.c
+++ b/camel/providers/imapx/camel-imapx-server.c
@@ -2253,7 +2253,6 @@ imapx_untagged_fetch (CamelIMAPXServer *is,
 
                                if (!camel_folder_summary_check_uid (folder->summary, mi->uid)) {
                                        RefreshInfoData *data;
-                                       gint cnt;
 
                                        data = camel_imapx_job_get_data (job);
                                        g_return_val_if_fail (data != NULL, FALSE);
@@ -2264,8 +2263,10 @@ imapx_untagged_fetch (CamelIMAPXServer *is,
 
                                        camel_folder_change_info_recent_uid (data->changes, mi->uid);
 
-                                       cnt = (camel_folder_summary_count (folder->summary) * 100 ) / 
messages;
-                                       camel_operation_progress (cancellable, cnt ? cnt : 1);
+                                       if (messages > 0) {
+                                               gint cnt = (camel_folder_summary_count (folder->summary) * 
100) / messages;
+                                               camel_operation_progress (cancellable, cnt ? cnt : 1);
+                                       }
                                } else {
                                        camel_message_info_unref (mi);
                                }