fixed potential race condition

libi2pd_client/AddressBook.cpp

@@ -755,7 +755,8 @@ namespace client
 				},
 				SUBSCRIPTION_REQUEST_TIMEOUT);
 			std::unique_lock<std::mutex> l(newDataReceivedMutex);
-			if (newDataReceived.wait_for (l, std::chrono::seconds (SUBSCRIPTION_REQUEST_TIMEOUT)) == std::cv_status::timeout)
+			// wait 1 more second
+			if (newDataReceived.wait_for (l, std::chrono::seconds (SUBSCRIPTION_REQUEST_TIMEOUT + 1)) == std::cv_status::timeout)
 			{
 				LogPrint (eLogError, "Addressbook: subscriptions request timeout expired");
 				numAttempts++;