Update Yasm to 1.2.0 (Yasm Part 1/3)

third_party/yasm/patched-yasm/modules/preprocs/nasm/nasm-pp.c

 /* -*- mode: c; c-file-style: "bsd" -*- */
 /* preproc.c   macro preprocessor for the Netwide Assembler
  *
  * The Netwide Assembler is copyright (C) 1996 Simon Tatham and
  * Julian Hall. All rights reserved. The software is
  * redistributable under the licence given in the file "Licence"
  * distributed in the NASM archive.
  *
  * initial version 18/iii/97 by Simon Tatham
  */
@@ skipping 5289 matching lines @@
         l->finishes = FALSE;
         stddef = l;
     }
 }
 
 static void
 make_tok_num(Token * tok, yasm_intnum *val)
 {
     tok->text = yasm_intnum_get_str(val);
     tok->type = TOK_NUMBER;
+    yasm_intnum_destroy(val);
 }
 
 Preproc nasmpp = {
     pp_reset,
     pp_getline,
     pp_cleanup
 };