bug #35710 [ErrorHandler] silence warning when zend.assertions=-1 (ni…

…colas-grekas)

This PR was merged into the 4.4 branch.

Discussion
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[ErrorHandler] silence warning when zend.assertions=-1

| Q             | A
| ------------- | ---
| Branch?       | 4.4
| Bug fix?      | yes
| New feature?  | no
| Deprecations? | no
| Tickets       | -
| License       | MIT
| Doc PR        | -

Reported at symfony/orm-pack@1000287#commitcomment-37276894

Commits
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67ef532 [ErrorHandler] silence warning when zend.assertions=-1

src/Symfony/Component/ErrorHandler/Debug.php

@@ -29,7 +29,7 @@ public static function enable(): ErrorHandler
             ini_set('display_errors', 1);
         }
 
-        ini_set('zend.assertions', 1);
+        @ini_set('zend.assertions', 1);
         ini_set('assert.active', 1);
         ini_set('assert.warning', 0);
         ini_set('assert.exception', 1);