Fix to avoid (php-set-style "nil") being called

Author: zonuexe

php-mode.el

@@ -1065,7 +1065,8 @@ After setting the stylevars run hooks according to STYLENAME
   (when php-mode--delayed-set-style
     (let ((coding-style (or (and (boundp 'php-project-coding-style) php-project-coding-style)
                             php-mode-coding-style)))
-      (prog1 (php-set-style (symbol-name coding-style))
+      (prog1 (when coding-style
+               (php-set-style (symbol-name coding-style)))
         (remove-hook 'hack-local-variables-hook #'php-mode-set-style-delay)))))
 
 (defvar php-mode-syntax-table