6717509 Need to use bswap/bswapq for byte swap of 64-bit integer on x32/x64 (fix lint)

@@ -374,13 +374,10 @@
         uint8_t *blockp;
         uint8_t *cbp;
         uint64_t counter;
         size_t pt_len, total_decrypted_len, mac_len, pm_len, pd_len;
         uint8_t *resultp;
-#ifdef _LITTLE_ENDIAN
-        uint8_t *p;
-#endif  /* _LITTLE_ENDIAN */
 
 
         pm_len = ctx->ccm_processed_mac_len;
 
         if (pm_len > 0) {