rendering only if layout and konfetti view exists - to avoid null reference errors

uhabits-android/src/main/java/org/isoron/uhabits/utils/ViewExtensions.kt

@@ -115,10 +115,12 @@ fun ViewGroup.buildKonfettiView(): View {
 }
 
 fun showConfetti(view: View) {
-    val viewId = R.id.konfettttiView
+    val viewId = R.id.konfetttiView
     val linearLayout = view.findViewById<LinearLayout>(R.id.konfettiLayout)
     val kv = view.findViewById<KonfettiView>(viewId)
-    linearLayout.bringToFront()
+    if (linearLayout != null) {
+        linearLayout.bringToFront()
+    }
     val party = Party(
         speed = 0f,
         maxSpeed = 32f,
@@ -128,7 +130,9 @@ fun showConfetti(view: View) {
         position = Position.Relative(0.5, 0.3),
         emitter = Emitter(duration = 300, TimeUnit.MILLISECONDS).max(300)
     )
-    kv.start(party)
+    if (kv != null) {
+        kv.start(party)
+    }
 }
 
 fun View.showMessage(msg: String) {

uhabits-android/src/main/res/layout/konfetti.xml

@@ -24,6 +24,6 @@
     <nl.dionsegijn.konfetti.xml.KonfettiView
         android:layout_width="match_parent"
         android:layout_height="match_parent"
-        android:id="@+id/konfettttiView"/>
+        android:id="@+id/konfetttiView"/>
 
 </LinearLayout>