[OPENMP]Fix PR41767: diagnose DSA for variables in clauses with default(none).

[OPENMP]Fix PR41767: diagnose DSA for variables in clauses with default(none).

If the combined directive has default(none) clause and has clauses for
inner directive that reference some variables, for which data-sharing
attributes are not specified, the error messages should be emitted for
such variables.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@360365 91177308-0d34-0410-b5e6-96231b3b80d8