message: ffs 2021-03-11 (d129205d)
  Code extracted from:
  at commit (master).
  Upstream Shortlog
diff: @@ -8,7 +8,7 @@ typedef struct _FMContextStruct *FMContext;
  extern FMContext create_FMcontext();
  extern FMContext create_local_FMcontext();
  -extern void free_FMcontext();
  +extern void free_FMcontext(FMContext c);
  extern void add_ref_FMcontext();
  extern void FMcontext_allow_self_formats(FMContext fmc);
  extern int
  