Backport of "check: fix dash_mpdparser_check_mpd_client_set_methods test." into 1.18
Backport of !2161 (merged) "check: fix dash_mpdparser_check_mpd_client_set_methods test.".
Commits:
- 6faff995 check: fix dash_mpdparser_check_mpd_client_set_methods test.