libmm-glib,common-helpers: avoid using g_time_zone_new_offset()
It requires newer glib than we do:
../libmm-glib/mm-common-helpers.c: In function ‘mm_new_iso8601_time’:
../libmm-glib/mm-common-helpers.c:1787:9: warning: ‘g_time_zone_new_offset’ is deprecated: Not available before 2.58 [-Wdeprecated-declarations]
1787 | tz = g_time_zone_new_offset (offset_minutes * 60);
| ^~
In file included from /usr/include/glib-2.0/glib/gdatetime.h:33:
/usr/include/glib-2.0/glib/gtimezone.h:67:25: note: declared here
67 | GTimeZone * g_time_zone_new_offset (gint32 seconds);
| ^~~~~~~~~~~~~~~~~~~~~~
Let's not use the routine with older versions of glib.
1 file changed
