clear error_clear_last() before every test

Author: mvorisek

src/Framework/TestRunner.php

@@ -13,6 +13,7 @@
 use function assert;
 use function class_exists;
 use function defined;
+use function error_clear_last;
 use function extension_loaded;
 use function get_include_path;
 use function hrtime;
@@ -84,6 +85,8 @@ public function run(TestCase $test): void
         $risky      = false;
         $skipped    = false;
 
+        error_clear_last();
+
         if ($this->shouldErrorHandlerBeUsed($test)) {
             ErrorHandler::instance()->enable();
         }