Replace elvis operators with .orEmpty where possible

app/src/main/java/exh/ui/metadata/MetadataViewController.kt

@@ -83,7 +83,7 @@ class MetadataViewController : NucleusController<MetadataViewControllerBinding,
 
     fun onNextMangaInfo(meta: RaisedSearchMetadata?) {
         val context = view?.context ?: return
-        data = meta?.getExtraInfoPairs(context) ?: emptyList()
+        data = meta?.getExtraInfoPairs(context).orEmpty()
         adapter?.update(data)
     }
 }

app/src/main/java/exh/ui/metadata/adapters/PururinDescriptionAdapter.kt

@@ -54,7 +54,7 @@ class PururinDescriptionAdapter(
                 } ?: genre?.name ?: itemView.context.getString(R.string.unknown)
             }
 
-            binding.uploader.text = meta.uploaderDisp ?: meta.uploader ?: ""
+            binding.uploader.text = meta.uploaderDisp ?: meta.uploader.orEmpty()
 
             binding.size.text = meta.fileSize ?: itemView.context.getString(R.string.unknown)
             binding.size.bindDrawable(itemView.context, R.drawable.ic_outline_sd_card_24)

app/src/main/java/exh/ui/smartsearch/SmartSearchController.kt

@@ -32,7 +32,7 @@ class SmartSearchController(bundle: Bundle? = null) : NucleusController<EhSmartS
         return binding.root
     }
 
-    override fun getTitle() = source?.name ?: ""
+    override fun getTitle() = source?.name.orEmpty()
 
     override fun createPresenter() = SmartSearchPresenter(source, smartSearchConfig)