[evolution-data-server] Fix a CamelVeeMessageInfo memory leak

[Milan Crha <mcrha src gnome org>]

commit aea8111426281b6453c8590247e5481c9447ca9f
Author: Milan Crha <mcrha redhat com>
Date:   Fri Jan 27 09:24:00 2017 +0100

    Fix a CamelVeeMessageInfo memory leak
    
    It had been never freed, because of the g_clear_object() use twice
    in a row, where the first had been supposed to be g_object_unref()
    instead. Even the 'git blame' shows a different commit author, it
    had been my change and thus also my fault.

 src/camel/camel-debug.c       |    2 +-
 src/camel/camel-vee-summary.c |    4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/src/camel/camel-debug.c b/src/camel/camel-debug.c
index 911c7e0..132c73d 100644
--- a/src/camel/camel-debug.c
+++ b/src/camel/camel-debug.c
@@ -996,7 +996,7 @@ remove_matching_ref_backtrace (GQueue *backtraces,
                        BacktraceLine *btline = bt->lines->next->data;
 
                        if (g_strcmp0 ("g_weak_ref_get()", btline->function) == 0)
-                               inc_up_lines = 1;
+                               inc_up_lines = 2;
                }
 
                if (backtrace_matches_ref (bt, unref_backtrace, up_lines + inc_up_lines)) {
diff --git a/src/camel/camel-vee-summary.c b/src/camel/camel-vee-summary.c
index c75f01a..2b51c26 100644
--- a/src/camel/camel-vee-summary.c
+++ b/src/camel/camel-vee-summary.c
@@ -293,9 +293,9 @@ camel_vee_summary_remove (CamelVeeSummary *summary,
        camel_folder_summary_remove_uid (CAMEL_FOLDER_SUMMARY (summary), vuid);
 
        if (mi) {
-               /* under twice, the first for camel_folder_summary_peek_loaded(),
+               /* unref twice, the first for camel_folder_summary_peek_loaded(),
                 * the second to actually free the mi */
-               g_clear_object (&mi);
+               g_object_unref (mi);
                g_clear_object (&mi);
        }