Merge pull request #1392 from hayeskl/feature/scale-fix

update scale constraint to prevent marking objects dirty when nothing has changed

Author: puneetbehl

grails-datastore-gorm-validation/src/main/groovy/org/grails/datastore/gorm/validation/constraints/ScaleConstraint.java

@@ -123,7 +123,10 @@ else if (propertyValue instanceof BigDecimal) {
      * @param originalValue The original value
      */
     private BigDecimal getScaledValue(BigDecimal originalValue) {
-        return originalValue.setScale(scale, BigDecimal.ROUND_HALF_UP);
+        if (originalValue.scale() > scale) {
+            return originalValue.setScale(scale, BigDecimal.ROUND_HALF_UP);
+        }
+        return originalValue;
     }
 }