Code style should not follow Yoda style

src/Spout/Autoloader/Psr4Autoloader.php

@@ -72,7 +72,7 @@ class Psr4Autoloader
 
         // work backwards through the namespace names of the fully-qualified
         // class name to find a mapped file name
-        while (false !== $pos = strrpos($prefix, '\\')) {
+        while (($pos = strrpos($prefix, '\\')) !== false) {
             // retain the trailing namespace separator in the prefix
             $prefix = substr($class, 0, $pos + 1);