CSMA: fix configuration bug
/* macMaxFrameRetries: Maximum number of re-transmissions attampts. Range 0--7 */
#ifdef CSMA_CONF_MAX_FRAME_RETRIES
-#define CSMA_MAX_FRAME_RETRIES CSMA_MAX_FRAME_RETRIES
+#define CSMA_MAX_FRAME_RETRIES CSMA_CONF_MAX_FRAME_RETRIES
#else
#define CSMA_MAX_FRAME_RETRIES 7
#endif
