SerialUploader: actualUploadPort may still be null, in that case fall back to userSelectedUploadPort

Author: Federico Fissore

arduino-core/src/cc/arduino/packages/uploaders/SerialUploader.java

@@ -192,6 +192,9 @@ public boolean uploadUsingPreferences(File sourcePath, String buildPath, String
     if (finalUploadPort == null) {
       finalUploadPort = actualUploadPort;
     }
+    if (finalUploadPort == null) {
+      finalUploadPort = userSelectedUploadPort;
+    }
     BaseNoGui.selectSerialPort(finalUploadPort);
     return uploadResult;
   }