userspace/snmpd: Perform data fill in init function

Trigger data fill in init function to avoid getting "first read" values later.
Note: This "trick" may not work when cache update time is increased
significantly.

Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

userspace/snmpd/init.c

@@ -52,4 +52,9 @@ void init_wrsSnmp(void)
 	init_wrsPstatsTable();
 	init_wrsPtpDataTable();
 	init_wrsPortStatusTable();
+
+	/* perform first reads, needed to calculate deltas later */
+	wrsTimingStatus_data_fill();
+	wrsNetworkingStatus_data_fill();
+
 }