LTO issue

[jimhester]

https://www.stats.ox.ac.uk/pub/bdr/LTO/glue.out

init.c:7:13: warning: type of ‘glue_’ does not match original declaration [-Wlto-type-mismatch]
    7 | extern SEXP glue_(SEXP, SEXP);
      |             ^
glue.c:22:6: note: type mismatch in parameter 3
   22 | SEXP glue_(SEXP x, SEXP f, SEXP open_arg, SEXP close_arg) {
      |      ^
glue.c:22:6: note: type ‘struct SEXPREC *’ should match type ‘void’
glue.c:22:6: note: ‘glue_’ was previously declared here