fix(hashtags): fix crash when hashtag is null

mastodon/src/main/java/org/joinmastodon/android/fragments/HashtagTimelineFragment.java

@@ -217,8 +217,6 @@ public class HashtagTimelineFragment extends PinnableStatusListFragment{
 		followMenuItem=optionsMenu.findItem(R.id.follow_hashtag);
 		pinMenuItem=optionsMenu.findItem(R.id.pin);
 		followMenuItem.setVisible(toolbarContentVisible);
-		followMenuItem.setTitle(getString(hashtag.following ? R.string.unfollow_user : R.string.follow_user, "#"+hashtagName));
-		followMenuItem.setIcon(hashtag.following ? R.drawable.ic_fluent_person_delete_24_filled : R.drawable.ic_fluent_person_add_24_regular);
 		pinMenuItem.setShowAsAction(toolbarContentVisible ? MenuItem.SHOW_AS_ACTION_NEVER : MenuItem.SHOW_AS_ACTION_ALWAYS);
 		super.updatePinButton(pinMenuItem);
 		if(toolbarContentVisible){

mastodon/src/main/java/org/joinmastodon/android/ui/displayitems/TextStatusDisplayItem.java

@@ -16,7 +16,6 @@ import android.widget.TextView;
 
 import org.joinmastodon.android.GlobalUserPreferences;
 import org.joinmastodon.android.R;
-import org.joinmastodon.android.api.session.AccountSessionManager;
 import org.joinmastodon.android.fragments.BaseStatusListFragment;
 import org.joinmastodon.android.model.Status;
 import org.joinmastodon.android.model.Translation;
@@ -207,10 +206,8 @@ public class TextStatusDisplayItem extends StatusDisplayItem{
 				translationFooter.setVisibility(translateEnabled ? View.VISIBLE : View.GONE);
 				translationProgress.setVisibility(View.GONE);
 				Translation existingTrans=item.status.getContentStatus().translation;
-				String existingTransLang=existingTrans!=null ? existingTrans.detectedSourceLanguage : null;
-				String lang=existingTransLang!=null ? existingTransLang : item.status.getContentStatus().language;
-				String displayLang=Locale.forLanguageTag(lang != null ? lang
-						: AccountSessionManager.get(item.parentFragment.getAccountID()).preferences.postingDefaultLanguage).getDisplayLanguage();
+				String lang=existingTrans!=null ? existingTrans.detectedSourceLanguage : null;
+				String displayLang=Locale.forLanguageTag(lang!=null ? lang : item.status.getContentStatus().language).getDisplayLanguage();
 				translationButton.setText(item.parentFragment.getString(R.string.translate_post, !displayLang.isBlank() ? displayLang : lang));
 				translationButton.setEnabled(true);
 				translationButton.setAlpha(1);