fix test case

h2/src/main/org/h2/jdbc/JdbcConnection.java

@@ -1753,7 +1753,11 @@ public class JdbcConnection extends TraceObject implements Connection {
             }
             checkClosed();
             Properties p = getClientInfo();
-            return p.getProperty(name);
+            String s = p.getProperty(name);
+            if (s == null) {
+            	throw new SQLClientInfoException();
+            }
+            return s;
         } catch (Exception e) {
             throw logAndConvert(e);
         }

h2/src/test/org/h2/test/jdbc/TestMetaData.java

@@ -1180,7 +1180,6 @@ public class TestMetaData extends TestBase {
 
     private void testClientInfo() throws SQLException {
         Connection conn = getConnection("metaData");
-        assertNull(conn.getClientInfo());
         assertThrows(SQLClientInfoException.class, conn).getClientInfo("xxx");
         DatabaseMetaData meta = conn.getMetaData();
         ResultSet rs = meta.getClientInfoProperties();