Bug about parsing queryparam is fixed

Bug about parsing queryparam is fixed

notification service is using queryparam.
RI does not support parsing queryparam without interface and uri.
so, i already added function getValueFromquery.
this function is copy of RI Function(ExtractFiltersFromQuery) and then modified.
but, strtok_r function disappear tokenized string after performing from original string.
then, I duplicate string when the getValueFromQuery function is called.

Change-Id: I9c4b5a8d8e5e8dac8f65a9f5b875a0a7e1b7d723
Signed-off-by: jaesick.shin <jaesick.shin@samsung.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/8743
Reviewed-by: Uze Choi <uzchoi@samsung.com>
Tested-by: Uze Choi <uzchoi@samsung.com>