[Bug demangler/88539] A memory leak issue was discovered in cplus-dem.c

[wcventure at 126 dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88539

--- Comment #1 from Cheng Wen <wcventure at 126 dot com> ---
Created attachment 45256
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45256&action=edit
POC2