skip_whitespace() shouldn't claim its return value is const, it doesn't know

that and callers wind up typecasting it back.

libbb/inet_common.c

@@ -8,13 +8,13 @@
  *
  */
 
+#include "libbb.h"
 #include "inet_common.h"
 #include <stdio.h>
 #include <errno.h>
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
-#include "libbb.h"
 
 #ifdef DEBUG
 # include <resolv.h>