Fixed lint

app/src/main/res/drawable/pride_background.xml

-<?xml version="1.0" encoding="utf-8"?><!--
-  Quasseldroid - Quassel client for Android
-
-  Copyright (c) 2019 Janne Koschinski
-  Copyright (c) 2019 The Quassel Project
-
-  This program is free software: you can redistribute it and/or modify it
-  under the terms of the GNU General Public License version 3 as published
-  by the Free Software Foundation.
-
-  This program is distributed in the hope that it will be useful,
-  but WITHOUT ANY WARRANTY; without even the implied warranty of
-  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-  GNU General Public License for more details.
-
-  You should have received a copy of the GNU General Public License along
-  with this program. If not, see <http://www.gnu.org/licenses/>.
-  -->
-
-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-  android:width="400dp"
-  android:height="500dp"
-  android:viewportWidth="400"
-  android:viewportHeight="500">
-  <path
-    android:fillColor="#dc1e20"
-    android:pathData="m400 649v-96.5h-360l360 97z" />
-  <path
-    android:fillColor="#ed9529"
-    android:pathData="m39.7 552h-39.7v93l400 107v-103l-360-97z" />
-  <path
-    android:fillColor="#f1e21a"
-    android:pathData="m0 645v104l400 107v-104l-400-107z" />
-  <path
-    android:fillColor="#2da150"
-    android:pathData="m0 749v103l400 107v-103l-400-107z" />
-  <path
-    android:fillColor="#2268fc"
-    android:pathData="m0 852v104l360 96.5h39.7v-92.9l-400-105z" />
-  <path
-    android:fillColor="#8d209f"
-    android:pathData="m0 956v96.5h360l-360-94z" />
-</vector>