FILE_SET: Fix source group detection
Call MatchChildrenFiles() instead of MatchesFiles() in order to account for files being in subgroups of source groups.
Fixes: #23880 (closed)
Backport: release
Call MatchChildrenFiles() instead of MatchesFiles() in order to account for files being in subgroups of source groups.
Fixes: #23880 (closed)
Backport: release