Preserve tread interrupted status

src/main/java/com/zaxxer/hikari/HikariDataSource.java

@@ -288,6 +288,7 @@ public class HikariDataSource extends HikariConfig implements DataSource, Closea
          }
          catch (InterruptedException e) {
             LOGGER.warn("Interrupted during closing", e);
+            Thread.currentThread().interrupt();
          }
       }
    }