mbstok_r: Simplify dependencies

[Bruno Haible]

This file had an unnecessary #include, for a long time.


2023-07-18  Bruno Haible  <bruno@clisp.org>

        mbstok_r: Simplify dependencies.
        * lib/mbstok_r.c: Include <stdlib.h> instead of mbuiter.h.
        * modules/mbstok_r (Depends-on): Remove mbuiter.

diff --git a/lib/mbstok_r.c b/lib/mbstok_r.c
index 86a016c593..f870bed4d7 100644
--- a/lib/mbstok_r.c
+++ b/lib/mbstok_r.c
@@ -20,7 +20,7 @@
 /* Specification.  */
 #include <string.h>
 
-#include "mbuiter.h"
+#include <stdlib.h>
 
 char *
 mbstok_r (char *string, const char *delim, char **save_ptr)
diff --git a/modules/mbstok_r b/modules/mbstok_r
index 6656bbad72..0a41e552ca 100644
--- a/modules/mbstok_r
+++ b/modules/mbstok_r
@@ -5,7 +5,6 @@ Files:
 lib/mbstok_r.c
 
 Depends-on:
-mbuiter
 string
 mbsspn
 mbspbrk