[LLDB] Unbreak the build after recent clang changes

9e08e51 introduced a new enum case.

Author: davezarzycki

lldb/include/lldb/lldb-enumerations.h

@@ -816,6 +816,7 @@ enum TemplateArgumentKind {
   eTemplateArgumentKindExpression,
   eTemplateArgumentKindPack,
   eTemplateArgumentKindNullPtr,
+  eTemplateArgumentKindUncommonValue,
 };
 
 /// Options that can be set for a formatter to alter its behavior. Not

lldb/source/Plugins/TypeSystem/Clang/TypeSystemClang.cpp

@@ -6981,6 +6981,9 @@ TypeSystemClang::GetTemplateArgumentKind(lldb::opaque_compiler_type_t type,
 
   case clang::TemplateArgument::Pack:
     return eTemplateArgumentKindPack;
+
+  case clang::TemplateArgument::UncommonValue:
+    return eTemplateArgumentKindUncommonValue;
   }
   llvm_unreachable("Unhandled clang::TemplateArgument::ArgKind");
 }