CSVREAD: the function didn't close the file. Thanks to Vince Bonfanti for the patch!

h2/src/main/org/h2/expression/Function.java

@@ -1884,7 +1884,12 @@ public class Function extends Expression implements FunctionCall {
             char fieldSeparator = csv.getFieldSeparatorRead();
             String[] columns = StringUtils.arraySplit(columnList, fieldSeparator, true);
             ResultSet rs = csv.read(fileName, columns, charset);
-            ValueResultSet vr = ValueResultSet.getCopy(rs, 0);
+            ValueResultSet vr;
+            try {
+                vr = ValueResultSet.getCopy(rs, 0);
+            } finally {
+                rs.close();
+            }
             return vr;
         }
         default:

h2/src/main/org/h2/value/ValueResultSet.java

@@ -40,7 +40,7 @@ public class ValueResultSet extends Value {
 
     /**
      * Create a result set value for the given result set. The result set will
-     * be fully read in memory.
+     * be fully read in memory. The original result set is not closed.
      *
      * @param rs the result set
      * @param maxrows the maximum number of rows to read (0 to just read the