Fix psalm

Author: xepozz

src/CompositeException.php

@@ -22,10 +22,7 @@ public function __construct(
         Throwable ...$rest,
     ) {
         $this->rest = $rest;
-        /**
-         * @psalm-suppress PossiblyInvalidArgument
-         */
-        parent::__construct($first->getMessage(), $first->getCode(), $first);
+        parent::__construct($first->getMessage(), (int) $first->getCode(), $first);
     }
 
     public function getFirstException(): Throwable

src/Exception/ErrorException.php

@@ -113,7 +113,7 @@ private function addXDebugTraceToFatalIfAvailable(): void
                 $trace[] = $frame;
             }
 
-            $ref = new ReflectionProperty('Exception', 'trace');
+            $ref = new ReflectionProperty(\Exception::class, 'trace');
             $ref->setAccessible(true);
             $ref->setValue($this, $trace);
         }