[Bug-apl] Another trivial g++ 8.1.1 incompatibility

[Chris Moller]

This is the same as the last batch--don't know how I  missed it the 
first time:

   Index: Svar_DB.cc
   ===================================================================
   --- Svar_DB.cc  (revision 1055)
   +++ Svar_DB.cc  (working copy)
   @@ -316,7 +316,8 @@
                                                    del, log);
        if (response)
           {
   -        memcpy(&cache, response->get__SVAR_RECORD_IS__record().data(),
   +        memcpy(static_cast <void *>(&cache),
   + response->get__SVAR_RECORD_IS__record().data(),
                    sizeof(Svar_record));
             delete response;
           }