Merge branch 'dont-increment-attempt-twice' into 'master'

Do not increment the attempt variable twice when requesting group info

See merge request !11

app/src/main/java/org/briarproject/hotspot/HotspotManager.java

@@ -209,7 +209,7 @@ class HotspotManager implements ActionListener {
 						frequency));
 				requestGroupInfoForConnection();
 			} else {
-				retryRequestingGroupInfo(attempt + 1);
+				retryRequestingGroupInfo(attempt);
 			}
 		};
 		try {