Converting binary data to UUID was incorrect when the converting more than 31…

Converting binary data to UUID was incorrect when the converting more than 31 bytes. Now always the first 16 bytes are used.

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

@@ -57,17 +57,17 @@ public class ValueUuid extends Value {
     }
 
     /**
-     * Get or create a UUID for the given 32 bytes.
+     * Get or create a UUID for the given 16 bytes.
      *
-     * @param binary the byte array (must be at least 32 bytes long)
+     * @param binary the byte array (must be at least 16 bytes long)
      * @return the UUID
      */
     public static ValueUuid get(byte[] binary) {
-        if (binary.length < 32) {
+        if (binary.length < 16) {
             return get(StringUtils.convertBytesToString(binary));
         }
         long high = Utils.readLong(binary, 0);
-        long low = Utils.readLong(binary, 16);
+        long low = Utils.readLong(binary, 8);
         return (ValueUuid) Value.cache(new ValueUuid(high, low));
     }