[orx-kinect] Change shutdown handler to inner class

orx-kinect-common/src/main/kotlin/org/openrndr/extra/kinect/impl/KinectImpl.kt

@@ -17,19 +17,17 @@ class DefaultKinects<CTX>(
     private val manager: KinectsManager<CTX>
 ) : Kinects<CTX> {
 
+    private inner class Destroyer : Thread() {
+        override fun run() {
+            manager.shutdown()
+        }
+    }
+
     init {
         manager.initialize()
         // as we don't have explicit shutdown mechanism in OPENRNDR
         // we need to install a shutdown hook for now
-        Runtime.getRuntime().addShutdownHook(
+        Runtime.getRuntime().addShutdownHook(Destroyer())
-                thread(
-                        name = "${manager.javaClass.simpleName}-closer",
-                        start = false,
-                        isDaemon = false
-                ) {
-                    manager.shutdown()
-                }
-        )
     }
 
     override fun countDevices(): Int {
@@ -132,14 +130,20 @@ class DefaultKinectDepthCamera(
 
     override var mirror: Boolean
         get() = depthMapper.mirror
-        set(value) { depthMapper.mirror = value }
+        set(value) {
+            depthMapper.mirror = value
+        }
 
 }
 
 private class KinectRawDataToDepthMapper :
-        Filter(filterShaderFromUrl(
+    Filter(
-                resourceUrl("kinect-raw-to-depth.frag",
+        filterShaderFromUrl(
-                DefaultKinects::class.java))
+            resourceUrl(
+                "kinect-raw-to-depth.frag",
+                DefaultKinects::class.java
+            )
+        )
     ) {
     var depthScale: Double by parameters
     var mirror: Boolean by parameters