made debug setting get a debug symbol

app/src/main/res/values/attrs.xml

@@ -25,6 +25,7 @@
     <attr name="search_add" format="reference"/>
     <attr name="options" format="reference"/>
     <attr name="play" format="reference"/>
+    <attr name="bug" format="reference"/>
     <attr name="settings" format="reference"/>
     <attr name="ic_hot" format="reference"/>
     <attr name="ic_channel" format="reference"/>

app/src/main/res/values/styles.xml

@@ -20,6 +20,7 @@
         <item name="thumbs_up">@drawable/ic_thumb_up_black_24dp</item>
         <item name="thumbs_down">@drawable/ic_thumb_down_black_24dp</item>
         <item name="info">@drawable/ic_info_outline_black_24dp</item>
+        <item name="bug">@drawable/ic_bug_report_black_24dp</item>
         <item name="audio">@drawable/ic_headset_black_24dp</item>
         <item name="clear_history">@drawable/ic_delete_sweep_white_24dp</item>
         <item name="download">@drawable/ic_file_download_black_24dp</item>
@@ -74,6 +75,7 @@
         <item name="thumbs_down">@drawable/ic_thumb_down_white_24dp</item>
         <item name="audio">@drawable/ic_headset_white_24dp</item>
         <item name="info">@drawable/ic_info_outline_white_24dp</item>
+        <item name="bug">@drawable/ic_bug_report_white_24dp</item>
         <item name="clear_history">@drawable/ic_delete_sweep_black_24dp</item>
         <item name="download">@drawable/ic_file_download_white_24dp</item>
         <item name="share">@drawable/ic_share_white_24dp</item>

app/src/main/res/xml/main_settings.xml

@@ -31,7 +31,7 @@
 
     <PreferenceScreen
         android:fragment="org.schabi.newpipe.settings.DebugSettingsFragment"
-        android:icon="?attr/info"
+        android:icon="?attr/bug"
         android:title="@string/settings_category_debug_title"
         android:key="@string/debug_pref_screen_key"/>
 </PreferenceScreen>