fix an issue spotted by the Clang analyzer (leak in yacc/reader.c)
fix an issue spotted by the Clang analyzer (leak in yacc/reader.c)

yacc/reader.c:1328:7: warning: Potential leak of memory pointed to by 'a_line'
      fprintf(f, ")\n# 0\n              ");
      ^~~~~~~

git-svn-id: e7e61699ce1738538ffebb75374fbea0924bc775@16333 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02

yunxing/ocaml,yunxing/ocaml,msprotz/ocaml,eliberis/ocaml,msprotz/ocaml,yunxing/ocaml,msprotz/ocaml,yunxing/ocaml,eliberis/ocaml,gerdstolpmann/ocaml,eliberis/ocaml,yunxing/ocaml,eliberis/ocaml,msprotz/ocaml,msprotz/ocaml,gerdstolpmann/ocaml,eliberis/ocaml,gerdstolpmann/ocaml,gerdstolpmann/ocaml,gerdstolpmann/ocaml