Fields{Match,Mismatch}Validator: declare variable right before its usage.

Reported by PMD.

No functional changes.

Author: php-coder

src/main/java/ru/mystamps/web/validation/jsr303/FieldsMatchValidator.java

@@ -46,12 +46,11 @@ public boolean isValid(final Object value, final ConstraintValidatorContext ctx)
 
 		try {
 			final String firstFieldValue  = BeanUtils.getProperty(value, firstFieldName);
-			final String secondFieldValue = BeanUtils.getProperty(value, secondFieldName);
-			
 			if (isNullOrEmpty(firstFieldValue)) {
 				return true;
 			}
 
+			final String secondFieldValue = BeanUtils.getProperty(value, secondFieldName);
 			if (isNullOrEmpty(secondFieldValue)) {
 				return true;
 			}

src/main/java/ru/mystamps/web/validation/jsr303/FieldsMismatchValidator.java

@@ -46,12 +46,11 @@ public boolean isValid(final Object value, final ConstraintValidatorContext ctx)
 
 		try {
 			final String firstFieldValue  = BeanUtils.getProperty(value, firstFieldName);
-			final String secondFieldValue = BeanUtils.getProperty(value, secondFieldName);
-			
 			if (isNullOrEmpty(firstFieldValue)) {
 				return true;
 			}
 
+			final String secondFieldValue = BeanUtils.getProperty(value, secondFieldName);
 			if (isNullOrEmpty(secondFieldValue)) {
 				return true;
 			}