SyntaxError::translateTokens(): prevent double translation

Generally speaking, the `$translate` parameter for the `SyntaxError::getNormalizedMessage()` method should only be passed as `true` when on a PHP version which doesn't do the PHP native token translation yet.

However, in edge cases, it could be possible that tokens could be double "translated", both by PHP itself as well as by the `SyntaxError::translateTokens()` method.

This minor fix prevents this by not matching token names when surrounded by parentheses.

Author: jrfnl

src/Error.php

@@ -194,7 +194,7 @@ protected function translateTokens($message)
             'T_ECHO' => 'echo'
         );
 
-        return preg_replace_callback('~T_([A-Z_]*)~', function ($matches) use ($translateTokens) {
+        return preg_replace_callback('~(?<!\()T_([A-Z_]*)(?!\))~', function ($matches) use ($translateTokens) {
             list($tokenName) = $matches;
             if (isset($translateTokens[$tokenName])) {
                 $operator = $translateTokens[$tokenName];