[evolution-data-server] M!26 - Fix a possible memory leak in e_cal_client_get_component_as_string()

[Milan Crha <mcrha src gnome org>]

commit 58ce6c4ddffe02d2fb66687d825a12ed4ea373e9
Author: Дилян Палаузов <git-dpa aegee org>
Date:   Thu Jul 11 11:17:42 2019 +0000

    M!26 - Fix a possible memory leak in e_cal_client_get_component_as_string()
    
    Closes https://gitlab.gnome.org/GNOME/evolution-data-server/merge_requests/26

 src/calendar/libecal/e-cal-client.c | 14 ++------------
 1 file changed, 2 insertions(+), 12 deletions(-)
---
diff --git a/src/calendar/libecal/e-cal-client.c b/src/calendar/libecal/e-cal-client.c
index 7e2738355..4cf3b14ba 100644
--- a/src/calendar/libecal/e-cal-client.c
+++ b/src/calendar/libecal/e-cal-client.c
@@ -3125,16 +3125,6 @@ append_timezone_string (gpointer key,
        GString *vcal_string = data;
 
        g_string_append (vcal_string, value);
-       g_free (value);
-}
-
-/* This simply frees the hash values. */
-static void
-free_timezone_string (gpointer key,
-                      gpointer value,
-                      gpointer data)
-{
-       g_free (value);
 }
 
 /**
@@ -3162,7 +3152,7 @@ e_cal_client_get_component_as_string (ECalClient *client,
        g_return_val_if_fail (E_IS_CAL_CLIENT (client), NULL);
        g_return_val_if_fail (icalcomp != NULL, NULL);
 
-       timezone_hash = g_hash_table_new (g_str_hash, g_str_equal);
+       timezone_hash = g_hash_table_new_full (g_str_hash, g_str_equal, NULL, g_free);
 
        /* Add any timezones needed to the hash. We use a hash since we only
         * want to add each timezone once at most. */
@@ -3171,7 +3161,7 @@ e_cal_client_get_component_as_string (ECalClient *client,
        cbdata.success = TRUE;
        i_cal_component_foreach_tzid (icalcomp, foreach_tzid_callback, &cbdata);
        if (!cbdata.success) {
-               g_hash_table_foreach (timezone_hash, free_timezone_string, NULL);
+               g_hash_table_destroy (timezone_hash);
                return NULL;
        }