Incorrect Sanitization in post-types-admin.php

The function radio_station_post_save_data that is hooked to the action save_post uses the wrong sanitization function to sanitize the value for $_POST[ post_showblog_id ] ( uses sanitize_text_field instead of a array_map or map_deep function ). Due to this, the array passed in $_POST[ post_showblog_id ] is converted to empty string and the meta value is not stored for the post.

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