Update src/PhpPresentation/Shape/AutoShape.php

Co-authored-by: Progi1984 <progi1984@gmail.com>

Author: seanlynchwv

src/PhpPresentation/Shape/AutoShape.php

@@ -285,7 +285,7 @@ public function getRoundRectCorner(): ?int
     /**
      * Set corner radius.
      */
-    public function setRoundRectCorner(int $pixels): self
+    public function setRoundRectCorner(?int $pixels): self
     {
         $this->roundRectCorner = max(0, $pixels);