[Clang][CIR] fix enumeration value 'OMPGroupPrivate' not handled in switch (#159694)

Author: makslevental

clang/lib/CIR/CodeGen/CIRGenDecl.cpp

@@ -665,8 +665,9 @@ void CIRGenFunction::emitDecl(const Decl &d, bool evaluateConditionDecl) {
  case Decl::ImplicitConceptSpecialization:
  case Decl::TopLevelStmt:
  case Decl::UsingPack:
- case Decl::OMPDeclareReduction:
  case Decl::OMPDeclareMapper:
+ case Decl::OMPDeclareReduction:
+ case Decl::OMPGroupPrivate:
  cgm.errorNYI(d.getSourceRange(),
  std::string("emitDecl: unhandled decl type: ") +
  d.getDeclKindName());