@CAPI question

I experimented with the @CAPI function and found it quite
annoying. E.g. a echo %@capi[libcurl.dll,curl_easy_init] works OK.
But all the handles to libcurl.dll (and all sub DLLs and .PDB-files) are not freed.
So e.g. a subsequent make install of one of those sub DLLs fails.

How are these handles supposed to get freed? I found no specifics on this in the help.