Fixes a lifecycle crash

app/src/main/java/net/pokeranalytics/android/ui/fragment/StatisticsFragment.kt

@@ -116,7 +116,10 @@ class StatisticsFragment : FilterableFragment(), RealmAsyncListener {
 	// Business
 
 	override fun asyncListenedEntityChange(realm: Realm) {
+
+		if (isAdded) { // Fixes: java.lang.IllegalStateException Fragment StatisticsFragment{9d3e5ec} not attached to a context.
 			launchStatComputation()
+		}
 
 //		val report = createSessionGroupsAndStartCompute(realm)
 //		tableReportFragment.report = report