Add missing override impls for enum types to TypeSystemSwift. (NFC)

Author: adrian-prantl

lldb/source/Plugins/TypeSystem/Swift/TypeSystemSwift.h

@@ -174,6 +174,13 @@ class TypeSystemSwift : public TypeSystem {
                            bool &is_complex) override;
   bool IsIntegerType(lldb::opaque_compiler_type_t type,
                      bool &is_signed) override;
+  bool IsScopedEnumerationType(lldb::opaque_compiler_type_t type) override {
+    return false;
+  }
+  CompilerType
+  GetEnumerationIntegerType(lldb::opaque_compiler_type_t type) override {
+    return {};
+  }
   bool IsScalarType(lldb::opaque_compiler_type_t type) override;
   bool IsCStringType(lldb::opaque_compiler_type_t type,
                      uint32_t &length) override {