Fix cppcheck style

rigs/icom/ic7100.c

@@ -287,6 +287,10 @@ int ic7100_get_clock(RIG *rig, int *year, int *month, int *day, int *hour,
         prmbuf[0] = 0x01;
         prmbuf[1] = 0x23;
         retval = icom_transaction(rig, cmd, subcmd, prmbuf, 2, respbuf, &resplen);
+        if (retval != RIG_OK)
+        {
+            return retval;
+        }
         *utc_offset = from_bcd(&respbuf[4], 2) * 100;
         *utc_offset += from_bcd(&respbuf[5], 2);