[evolution-data-server] Not able to select time in appointment/meeting for some locales

[Milan Crha <mcrha src gnome org>]

commit b4f62a416f3ed1b97400b7c378179bf0c37ba86f
Author: Milan Crha <mcrha redhat com>
Date:   Fri Jul 10 16:33:10 2015 +0200

    Not able to select time in appointment/meeting for some locales
    
    The problem was that locale_supports_12_hour_format() returned failure
    when the locale supported 12 hour format, because the AM/PM string
    didn't fit the 16-bytes buffer. Using large-enough buffer and sane
    'struct tm' values makes this work properly. One such locale is bn_IN.

 libedataserver/e-time-utils.c |   21 ++++++++++++++++++++-
 1 files changed, 20 insertions(+), 1 deletions(-)
---
diff --git a/libedataserver/e-time-utils.c b/libedataserver/e-time-utils.c
index 058dadf..7bb7d75 100644
--- a/libedataserver/e-time-utils.c
+++ b/libedataserver/e-time-utils.c
@@ -1587,9 +1587,28 @@ static gboolean
 locale_supports_12_hour_format (void)
 {
        struct tm tmp_tm = { 0 };
-       gchar s[16];
+       gchar s[40];
+
+       /* Fill the struct tm with some sane values. */
+       tmp_tm.tm_year = 2000;
+       tmp_tm.tm_mon = 0;
+       tmp_tm.tm_mday = 1;
+       tmp_tm.tm_sec = 0;
+       tmp_tm.tm_isdst = 0;
+       tmp_tm.tm_hour = 1;
+       tmp_tm.tm_min = 0;
+       tmp_tm.tm_wday = 6;
+       tmp_tm.tm_yday = 6;
 
        e_utf8_strftime (s, sizeof (s), "%p", &tmp_tm);
+
+       if (!s[0]) {
+               tmp_tm.tm_hour = 13;
+               tmp_tm.tm_min = 0;
+
+               e_utf8_strftime (s, sizeof (s), "%p", &tmp_tm);
+       }
+
        return s[0] != '\0';
 }