fix for PHP 8.1.0beta1

[remicollet]

With 8.1.0beta1

Deprecated: Return type of Imagick::next(): bool should either be compatible with Iterator::next(): void, or the #[ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in Unknown on line 0
Deprecated: Return type of Imagick::rewind(): bool should either be compatible with Iterator::rewind(): void, or the #[ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in Unknown on line 0
Deprecated: Return type of ImagickPixelIterator::next(): array should either be compatible with Iterator::next(): void, or the #[ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in Unknown on line 0
Deprecated: Return type of ImagickPixelIterator::rewind(): bool should either be compatible with Iterator::rewind(): void, or the #[ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in Unknown on line 0

Having to run regen_arginfo.sh from PHP 8.1 seems really ugly, perhaps a better way exists...

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Notice, nikik/php-parser 4.9.0 is broken you also need to hack to use master which have the proper fixes...

[Danack]

Thanks.

And yep, php-parser was broken, but 4.12.0 is working, so can hack it to that.

Having to run regen_arginfo.sh from PHP 8.1 seems really ugly,

Yeah....I'm not going to fix it now, or look at the PR #423 but the current situation is very sub-optimal.