Slightly slows down the maximum map framerate

Experiment to try to fix #536 crashing the headunit

app/src/main/java/me/hufman/androidautoidrive/carapp/maps/FrameUpdater.kt

@@ -23,16 +23,17 @@ class FrameUpdater(val display: VirtualDisplayScreenCapture, val modeListener: F
 		display.registerImageListener(ImageReader.OnImageAvailableListener // Called from the UI thread to say a new image is available
 		{
 			// let the car thread consume the image
-			schedule()
+			// we were probably waiting for the image to start, so fire immediately
+			schedule(5)
 		})
 		schedule()  // check for a first image
 	}
 
 	override fun run() {
-		var bitmap = display.getFrame()
+		val bitmap = display.getFrame()
 		if (bitmap != null) {
 			sendImage(bitmap)
-			schedule()  // check if there's another frame ready for us right now
+			schedule(30)  // check if there's another frame ready for us right now
 		} else {
 			// wait for the next frame, unless the callback comes back sooner
 			schedule(1000)