php80Extensions.xmlreader: fix build

(cherry picked from commit cede244af9)

pkgs/top-level/php-packages.nix

@@ -565,6 +565,7 @@ lib.makeScope pkgs.newScope (self: with self; {
           buildInputs = [ libxml2 ];
           internalDeps = [ php.extensions.dom ];
           NIX_CFLAGS_COMPILE = [ "-I../.." "-DHAVE_DOM" ];
+          doCheck = false;
           configureFlags = [ "--enable-xmlreader" ]
             # Required to build on darwin.
             ++ lib.optionals (lib.versionOlder php.version "7.4") [ "--with-libxml-dir=${libxml2.dev}" ];