Remove redefinition of strndup() which is no longer used in the codebase

config.h.in

@@ -68,9 +68,6 @@
 /* Define to 1 if you have the `strncasecmp' function. */
 #undef HAVE_STRNCASECMP
 
-/* Define to 1 if you have the `strndup' function. */
-#undef HAVE_STRNDUP
-
 /* Define to 1 if you have the <syslog.h> header file. */
 #undef HAVE_SYSLOG_H
 

configure.in

@@ -35,7 +35,7 @@ AC_FUNC_VPRINTF
 AC_FUNC_MEMCMP
 AC_FUNC_MALLOC
 AC_FUNC_REALLOC
-AC_CHECK_FUNCS(strcasecmp strdup strndup strerror snprintf vsnprintf vasprintf open vsyslog strncasecmp setlocale)
+AC_CHECK_FUNCS(strcasecmp strdup strerror snprintf vsnprintf vasprintf open vsyslog strncasecmp setlocale)
 
 #check if .section.gnu.warning accepts long strings (for __warn_references)
 AC_LANG_PUSH([C])

json_object.c

@@ -34,10 +34,6 @@
 # error You do not have strdup on your system.
 #endif /* HAVE_STRDUP */
 
-#if !defined(HAVE_STRNDUP)
-  char* strndup(const char* str, size_t n);
-#endif /* !HAVE_STRNDUP */
-
 #if !defined(HAVE_SNPRINTF) && defined(_MSC_VER)
   /* MSC has the version as _snprintf */
 # define snprintf _snprintf

json_tokener.c

@@ -170,29 +170,6 @@ struct json_object* json_tokener_parse_verbose(const char *str, enum json_tokene
     return obj;
 }
 
-
-#if !HAVE_STRNDUP
-/* CAW: compliant version of strndup() */
-char* strndup(const char* str, size_t n)
-{
-  if(str) {
-    size_t len = strlen(str);
-    size_t nn = json_min(len,n);
-    char* s = (char*)malloc(sizeof(char) * (nn + 1));
-
-    if(s) {
-      memcpy(s, str, nn);
-      s[nn] = '\0';
-    }
-
-    return s;
-  }
-
-  return NULL;
-}
-#endif
-
-
 #define state  tok->stack[tok->depth].state
 #define saved_state  tok->stack[tok->depth].saved_state
 #define current tok->stack[tok->depth].current