Fix NullPointerException in ContainerLessJdbcDelegate when using ScriptUtils

modules/jdbc/src/main/java/org/testcontainers/jdbc/ContainerLessJdbcDelegate.java

@@ -33,4 +33,23 @@ protected Statement createNewConnection() {
             throw new ConnectionCreationException("Could create JDBC statement", e);
         }
     }
+
+    @Override
+    protected void closeConnectionQuietly(Statement statement) {
+        if (statement != null) {
+            try {
+                statement.close();
+            } catch (Exception e) {
+                log.error("Could not close JDBC connection", e);
+            }
+        }
+
+        if (connection != null) {
+            try {
+                connection.close();
+            } catch (Exception e) {
+                log.error("Could not close JDBC connection", e);
+            }
+        }
+    }
 }

modules/jdbc/src/test/java/org/testcontainers/jdbc/ContainerLessJdbcDelegateTest.java

@@ -0,0 +1,29 @@
+package org.testcontainers.jdbc;
+
+import org.junit.jupiter.api.Test;
+
+import java.sql.Connection;
+import java.sql.Statement;
+
+import static org.assertj.core.api.Assertions.assertThatCode;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+class ContainerLessJdbcDelegateTest {
+
+    @Test
+    void closeClosesStatementAndConnectionQuietly() throws Exception {
+        Connection connection = mock(Connection.class);
+        Statement statement = mock(Statement.class);
+        when(connection.createStatement()).thenReturn(statement);
+
+        ContainerLessJdbcDelegate delegate = new ContainerLessJdbcDelegate(connection);
+        delegate.execute("select 1", "test.sql", 1, false, false);
+
+        assertThatCode(delegate::close).doesNotThrowAnyException();
+
+        verify(statement).close();
+        verify(connection).close();
+    }
+}