C++: Support ellipsis on variadic inheritance parsing

Change-Id: I571aefdb1f2aba88ba0c7710f16b6d8ad2e8f5a8
Reviewed-by: André Hartmann <aha_1980@gmx.de>
Reviewed-by: Orgad Shaneh <orgads@gmail.com>
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@theqtcompany.com>

src/libs/3rdparty/cplusplus/ASTMatcher.cpp

@@ -462,6 +462,8 @@ bool ASTMatcher::match(BaseSpecifierAST *node, BaseSpecifierAST *pattern)
     else if (! AST::match(node->name, pattern->name, this))
         return false;
 
+    pattern->ellipsis_token = node->ellipsis_token;
+
     return true;
 }