diff -uNr busybox-1.29.3/libbb/platform.c busybox-1.29.3.mod/libbb/platform.c
--- busybox-1.29.3/libbb/platform.c	2018-07-02 14:23:06.000000000 +0300
+++ busybox-1.29.3.mod/libbb/platform.c	2019-02-08 16:10:54.101961593 +0200
@@ -8,15 +8,6 @@
  */
 #include "libbb.h"
 
-#ifndef HAVE_STRCHRNUL
-char* FAST_FUNC strchrnul(const char *s, int c)
-{
-	while (*s != '\0' && *s != c)
-		s++;
-	return (char*)s;
-}
-#endif
-
 #ifndef HAVE_USLEEP
 int FAST_FUNC usleep(unsigned usec)
 {