Sync exif dependency on mbstring extension as optional #3793
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The required dependency on mbstring extension in exif was removed via php/php-src@755c2cd which made the mbstring extension optional dependency.
Also the exif extension uses the
ZEND_MOD_OPTIONAL
to define the dependency on mbstring extension so it already loads the extensions in this case properly (meaning: there's no need to mention that mbstring must be loaded before the exif in php.ini).Update for the PHP build system:
php/php-src#16062