Improve handling of HotspotState's field 'consumed'

briar-android/src/main/java/org/briarproject/briar/android/hotspot/HotspotActivity.java

@@ -60,6 +60,7 @@ public class HotspotActivity extends BriarActivity
 				// to not lose state on configuration changes
 				if (fm.findFragmentByTag(tag) == null) {
 					if (started.wasNotYetConsumed()) {
+						started.consume();
 						showFragment(fm, new HotspotFragment(), tag);
 					}
 				}

briar-android/src/main/java/org/briarproject/briar/android/hotspot/HotspotState.java

@@ -57,16 +57,19 @@ abstract class HotspotState {
 			return websiteConfig;
 		}
 
+		@UiThread
+		boolean wasNotYetConsumed() {
+			return !consumed;
+		}
+
 		/**
 		 * Mark this state as consumed, i.e. the UI has already done something
 		 * as a result of the state changing to this. This can be used in order
 		 * to not repeat actions such as showing fragments on rotation changes.
 		 */
 		@UiThread
-		boolean wasNotYetConsumed() {
-			boolean old = consumed;
+		void consume() {
 			consumed = true;
-			return !old;
 		}
 	}