avoid unexpected NAN value was coerced to string

[remicollet]

See https://wiki.php.net/rfc/warnings-php-8-5#coercing_nan_to_other_types

                                                 
========DIFF========
001+ == FAIL! NAN ==
002+ expected:
003+ --- 
004+ Warning: unexpected NAN value was coerced to string in /work/GIT/pecl-and-ext/yaml/tests/bug_79866.php on line 24
005+ NAN
006+ ...
     
008+ got:--- NAN
009+ ...
========DONE========
FAIL Test PECL bug #79866 [tests/bug_79866.phpt] 

[bd808]

Thanks for the patch @remicollet. I will try to get to this on Sunday. I’ve been on holiday and ignoring computer things to the extent that is possible for a couple of weeks. :)

[remicollet]

Thanks for the patch @remicollet. I will try to get to this on Sunday. I’ve been on holiday and ignoring computer things to the extent that is possible for a couple of weeks. :)

Nothing urgent, this is only a fix for a test ;)
Extension is still compatible with 8.5