bug symfony#13347 [Console] Helper\TableHelper->addRow optimization (boekkooi)

This PR was merged into the 2.3 branch.

Discussion
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[Console] Helper\TableHelper->addRow optimization

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | symfony#13322
| License       | MIT
| Doc PR        | -

Commits
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9ea59ac [Console] Helper\Table->addRow optimization

Author: fabpot

src/Symfony/Component/Console/Helper/TableHelper.php

@@ -143,8 +143,9 @@ public function addRow(array $row)
     {
         $this->rows[] = array_values($row);
 
-        $keys = array_keys($this->rows);
-        $rowKey = array_pop($keys);
+        end($this->rows);
+        $rowKey = key($this->rows);
+        reset($this->rows);
 
         foreach ($row as $key => $cellValue) {
             if (!strstr($cellValue, "\n")) {