Replace "Select language" by the dafault/current language

Please test: https://www.drupal.org/project/gtranslate/releases/8.x-2.x-dev →

Something is wrong - there is still error message:

Deprecated function: explode(): Passing null to parameter #2 ($string) of type string is deprecated in Drupal\gtranslate\Plugin\Block\GTranslateBlock->build() (line 340 of modules/gtranslate/src/Plugin/Block/GTranslateBlock.php).
Drupal\gtranslate\Plugin\Block\GTranslateBlock->build() (Line: 171)

Automatically closed - issue fixed for 2 weeks with no activity.