Fix some copy-and-paste errors

h2/src/docsrc/help/help.csv

@@ -2654,7 +2654,7 @@ INTERVAL [-|+] '[-|+]dayInt hoursInt' DAY TO HOUR
 ","
 An INTERVAL DAY TO HOUR literal.
 ","
-INTERVAL '10 11' DAY TO *
+INTERVAL '10 11' DAY TO HOUR
 "
 
 "Other Grammar","INTERVAL DAY TO MINUTE","

h2/src/main/org/h2/mvstore/db/ValueDataType.java

@@ -453,7 +453,7 @@ public class ValueDataType implements DataType {
                 ordinal = ~ordinal;
             }
             buff.put((byte) Value.INTERVAL_YEAR).
-                put((byte) (ordinal)).
+                put((byte) ordinal).
                 putVarLong(interval.getLeading());
             break;
         }

h2/src/main/org/h2/util/LocalDateTimeUtils.java

@@ -383,12 +383,12 @@ public class LocalDateTimeUtils {
     }
 
     /**
-     * Converts a value to a OffsetDateTime.
+     * Converts a value to a Duration.
      *
      * <p>This method should only called from Java 8 or later.</p>
      *
      * @param value the value to convert
-     * @return the OffsetDateTime
+     * @return the Duration
      */
     public static Object valueToDuration(Value value) {
         if (!(value instanceof ValueInterval)) {
@@ -572,7 +572,7 @@ public class LocalDateTimeUtils {
         } catch (IllegalAccessException e) {
             throw DbException.convert(e);
         } catch (InvocationTargetException e) {
-            throw DbException.convertInvocation(e, "time conversion failed");
+            throw DbException.convertInvocation(e, "interval conversion failed");
         }
     }