fix: use spread operator instead of call_user_func_array to be compat…

[matzeeable]

Q	A
Bug fix?	yes
New feature?	no
BC breaks?	no
Related Issue	humbug/php-scoper#294
Need Doc update	no

Describe your change

Use sprintf() with spread operator instead of call_user_func_array().

What problem is this fixing?

When using https://github.com/humbug/php-scoper it modifies the following code:

return call_user_func_array('sprintf', $arguments);

to:

return \call_user_func_array('PhpScoper\\Vendor\\sprintf', $arguments);

This leads to an PHP fatal error as the PhpScoper\Vendor\sprintf function is not available.

[theofidry]

I think it's a good change. Nonetheless, this specific change was caused by a bug which is fixed in humbug/php-scoper#1028.