Apply extra 250ms after waitForUploadPort to all platforms

Author: sandeepmistry

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

@@ -145,11 +145,10 @@ public boolean uploadUsingPreferences(File sourcePath, String buildPath, String
           // have already occurred before we start scanning.
           actualUploadPort = waitForUploadPort(userSelectedUploadPort, before);
 
-          if (OSUtils.isMacOS()) {
           // on OS X, if the port is opened too quickly after it is detected,
-          // a "Resource busy" error occurs, add a delay to workaround this
+          // a "Resource busy" error occurs, add a delay to workaround this,
+          // apply to other platforms as well.
           Thread.sleep(250);
-          }
         }
       } catch (SerialException e) {
         throw new RunnerException(e);