minor symfony#14188 [Validator] Use strict comparisons in loaders (dunglas)

This PR was merged into the 2.3 branch.

Discussion
----------

[Validator] Use strict comparisons in loaders

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| License       | MIT
| Doc PR       | n/a

Commits
-------

efc1c03 [Validator] Use strict comparisons in loaders

Author: fabpot

src/Symfony/Component/Validator/Mapping/Loader/AnnotationLoader.php

@@ -57,7 +57,7 @@ public function loadClassMetadata(ClassMetadata $metadata)
         }
 
         foreach ($reflClass->getProperties() as $property) {
-            if ($property->getDeclaringClass()->name == $className) {
+            if ($property->getDeclaringClass()->name === $className) {
                 foreach ($this->reader->getPropertyAnnotations($property) as $constraint) {
                     if ($constraint instanceof Constraint) {
                         $metadata->addPropertyConstraint($property->name, $constraint);
@@ -69,7 +69,7 @@ public function loadClassMetadata(ClassMetadata $metadata)
         }
 
         foreach ($reflClass->getMethods() as $method) {
-            if ($method->getDeclaringClass()->name ==  $className) {
+            if ($method->getDeclaringClass()->name === $className) {
                 foreach ($this->reader->getMethodAnnotations($method) as $constraint) {
                     if ($constraint instanceof Constraint) {
                         if (preg_match('/^(get|is)(.+)$/i', $method->name, $matches)) {

src/Symfony/Component/Validator/Mapping/Loader/YamlFileLoader.php

@@ -85,7 +85,7 @@ protected function parseNodes(array $nodes)
         $values = array();
 
         foreach ($nodes as $name => $childNodes) {
-            if (is_numeric($name) && is_array($childNodes) && count($childNodes) == 1) {
+            if (is_numeric($name) && is_array($childNodes) && 1 === count($childNodes)) {
                 $options = current($childNodes);
 
                 if (is_array($options)) {