Fix FC on empty symbol and when moving

src/AprsPacket.scala

@@ -59,7 +59,7 @@ object AprsPacket {
 		// only report speeds above 2m/s (7.2km/h)
 		if (location.hasSpeed && location.hasBearing)
 		   // && location.getSpeed > 2)
-			"%03d/%03d".format(location.getBearing,
+			"%03d/%03d".format(location.getBearing.asInstanceOf[Int],
 				mps2kt(location.getSpeed))
 		else
 			""

src/AprsService.scala

@@ -84,7 +84,9 @@ class AprsService extends Service with LocationListener {
 
 		val callsign = prefs.getString("callsign", null)
 		val callssid = AprsPacket.formatCallSsid(callsign, prefs.getString("ssid", ""))
-		val symbol = prefs.getString("symbol", getString(R.string.default_symbol))
+		var symbol = prefs.getString("symbol", "")
+		if (symbol.length != 2)
+			symbol = getString(R.string.default_symbol)
 		val status = prefs.getString("status", getString(R.string.default_status))
 
 		val login = AprsPacket.formatLogin(prefs.getString("callsign", null),