[evolution-data-server] Address few issues found by Coverity Scan

[Milan Crha <mcrha src gnome org>]

commit e34572277e015f66ebe8a824680345f8226145bd
Author: Milan Crha <mcrha redhat com>
Date:   Wed Feb 24 09:50:00 2016 +0100

    Address few issues found by Coverity Scan

 calendar/libecal/e-cal-recur.c |    4 ++--
 camel/camel-db.c               |    2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/calendar/libecal/e-cal-recur.c b/calendar/libecal/e-cal-recur.c
index e2c895b..66b8170 100644
--- a/calendar/libecal/e-cal-recur.c
+++ b/calendar/libecal/e-cal-recur.c
@@ -238,8 +238,8 @@ apply_duration (struct icaltimetype *tt,
        if (icaldurationtype_is_null_duration (*duration))
                return;
 
-       days = duration->days + 7 * duration->weeks;
-       seconds = (duration->hours * 60 * 60) + (duration->minutes * 60) + duration->seconds;
+       days = (gint64) duration->days + 7 * ((gint64) duration->weeks);
+       seconds = ((gint64) duration->hours * 60 * 60) + ((gint64) duration->minutes * 60) + 
duration->seconds;
        days += seconds / (24 * 60 * 60);
        seconds = seconds % (24 * 60 * 60);
 
diff --git a/camel/camel-db.c b/camel/camel-db.c
index 4f1837a..bcdc0f6 100644
--- a/camel/camel-db.c
+++ b/camel/camel-db.c
@@ -2302,7 +2302,7 @@ cdb_delete_ids (CamelDB *cdb,
                 GError **error)
 {
        gchar *tmp;
-       gint ret;
+       gint ret = 0;
        gchar *tab;
        gboolean first = TRUE;
        GString *str = g_string_new ("DELETE FROM ");