fixed endianess for toByte and base_w

wots.c

@@ -71,7 +71,7 @@ static void base_w(int *output, const unsigned char *input, int in_len, const wo
 
   for (consumed = 0; consumed < 8 * in_len; consumed += params->log_w) {
     if (bits == 0) {
-      total = input[in_len - 1 - in];
+      total = input[in];
       in++;
       bits += 8;
     }

xmss_commons.c

@@ -12,7 +12,7 @@ Public domain.
 void to_byte(unsigned char *out, unsigned int in, int bytes)
 {
   int i;
-  for (i = 0; i < bytes; i++) {
+  for (i = bytes-1; i >= 0; i--) {
     out[i] = in & 0xff;
     in = in >> 8;
   }