Minor fixes for builds stabilization

Author: Stanislav Idolov

dev/tests/functional/tests/app/Magento/Multishipping/Test/TestStep/FillShippingInformationStep.php

@@ -58,7 +58,7 @@ public function __construct(
     public function run()
     {
         $shippingMethods = [];
-        $addressCount = $this->customer->getAddress();
+        $addressCount = count($this->customer->getAddress());
         for ($i = 0; $i < $addressCount; $i++) {
             $shippingMethods[] = $this->shippingMethod;
         }

dev/tests/static/testsuite/Magento/Test/Legacy/ObsoleteCodeTest.php

@@ -501,9 +501,8 @@ private function _checkConstantWithClasspath($constant, $class, $replacement, $c
     {
         $classPathParts = explode('\\', $class);
         $classPartialPath = '';
-        $classPathPartsCount = count($classPathParts);
-        for ($i = $classPathPartsCount - 1; $i >= 0; $i--) {
-            if ($i === ($classPathPartsCount - 1)) {
+        for ($i = count($classPathParts) - 1; $i >= 0; $i--) {
+            if ($i === (count($classPathParts) - 1)) {
                 $classPartialPath = $classPathParts[$i] . $classPartialPath;
             } else {
                 $classPartialPath = $classPathParts[$i] . '\\' . $classPartialPath;