GameDetailsDialog: Hide description if empty

In particular, Wii games don't have descriptions.

Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/dialogs/GameDetailsDialog.java

@@ -2,6 +2,7 @@
 
 import android.app.Dialog;
 import android.os.Bundle;
+import android.view.View;
 import android.view.ViewGroup;
 import android.widget.ImageView;
 import android.widget.TextView;
@@ -53,9 +54,14 @@ public Dialog onCreateDialog(Bundle savedInstanceState)
     FloatingActionButton buttonLaunch = contents.findViewById(R.id.button_launch);
 
     String country = getResources().getStringArray(R.array.countryNames)[gameFile.getCountry()];
+    String description = gameFile.getDescription();
 
     textTitle.setText(gameFile.getTitle());
     textDescription.setText(gameFile.getDescription());
+    if (description.isEmpty())
+    {
+      textDescription.setVisibility(View.GONE);
+    }
     textCountry.setText(country);
     textCompany.setText(gameFile.getCompany());