Fix a synchronization bug

Fixes a synchronization bug. Return if there's no timeout OR if there's no sync byte received.
The previous version needed both to be true at the same time to return without sending a
frame, which meant that a frame was sent if there was a timeout even if no sync byte had been
received. That, in turn, caused random problems for the Processing sketch on the other end.

Author: alrvid

libraries/Camera/examples/CameraCaptureRawBytes/CameraCaptureRawBytes.ino

@@ -67,8 +67,11 @@ void loop() {
   // Time out after 2 seconds and send new data
   bool timeoutDetected = millis() - lastUpdate > 2000;
 
-  // Wait for sync byte.
-  if(!timeoutDetected && Serial.read() != 1) return;  
+  // Wait for sync byte and timeout
+  if ((!timeoutDetected) || (Serial.read() != 1))
+  {
+    return;
+  }
 
   lastUpdate = millis();