gst/gstutils.c: Fix memleak (#351502).

Original commit message from CVS:
* gst/gstutils.c: (gst_util_set_value_from_string):
Fix memleak (#351502).
* tests/check/gst/gstutils.c: (GST_START_TEST), (gst_utils_suite):
Add unit test for most of gst_util_set_value_from_string()
(not that one would want to encourage use of this function).
3 files changed