Sub: stop using in_mavlink_delay as a proxy for disabling logging

ArduSub/GCS_Mavlink.cpp

@@ -1828,6 +1828,7 @@ void Sub::mavlink_delay_cb()
     }
 
     in_mavlink_delay = true;
+    DataFlash.EnableWrites(false);
 
     uint32_t tnow = millis();
     if (tnow - last_1hz > 1000) {
@@ -1847,6 +1848,7 @@ void Sub::mavlink_delay_cb()
         gcs_send_text(MAV_SEVERITY_INFO, "Initialising APM");
     }
 
+    DataFlash.EnableWrites(true);
     in_mavlink_delay = false;
 }
 

ArduSub/system.cpp

@@ -291,9 +291,6 @@ bool Sub::optflow_position_ok()
 bool Sub::should_log(uint32_t mask)
 {
 #if LOGGING_ENABLED == ENABLED
-    if (in_mavlink_delay) {
-        return false;
-    }
     if (!(mask & g.log_bitmask)) {
         return false;
     }