Merge branch '3.4' into 4.3

* 3.4:
  Add missing use statement
  [Profiler] wording
  X-Accel Nginx URL updated
  ticket-30197 [Validator] Add the missing translations for the Chinese (Taiwan) ("zh_TW") locale
  Fixed test added in #35022
  Use locale_parse for computing fallback locales
  [Console] Fix filtering out identical alternatives when there is a command loader

Author: nicolas-grekas

Tests/DotenvTest.php

@@ -436,10 +436,13 @@ public function testGetVariablesValueFromGetenv()
         putenv('Foo=Bar');
 
         $dotenv = new Dotenv(true);
-        $values = $dotenv->parse('Foo=${Foo}');
-        $this->assertSame('Bar', $values['Foo']);
 
-        putenv('Foo');
+        try {
+            $values = $dotenv->parse('Foo=${Foo}');
+            $this->assertSame('Bar', $values['Foo']);
+        } finally {
+            putenv('Foo');
+        }
     }
 
     /**