fixed #320 issue

targets/TEST/PDCP/test_pdcp.c

@@ -248,15 +248,12 @@ BOOL test_pdcp_data_req(void)
        * XXX mem_block_t doesn't hold buffer size, how do we keep the size
        * information if we pass mem_block_ts via a linked list?
        */
-#if 0
 
       if (pdcp_test_pdu_buffer_size == 0 || pdcp_test_pdu_buffer == NULL) {
         msg("[TEST] PDU created by pdcp_data_req() is invalid!\n");
         return FALSE;
       }
 
-#endif
-
       /*
        * Serialize incoming mem_block_t into an unsigned character array
        * and add removed PDU to RX list in order to use it in the next test