Core: crypt_r() error handling fixed. The crypt_r() function returns NULL on errors, check it explicitly instead of assuming errno will remain 0 if there are no errors (per POSIX, the setting of errno after a successful call to a function is unspecified unless the description of that function specifies that errno shall not be modified). Additionally, dropped unneeded ngx_set_errno(0) and fixed error handling of memory allocation after normal crypt(), which was inapropriate and resulted in null pointer dereference on allocation failures.

X:stylesheet {

X:output method="xml"
X:param indent-increment="'   '";

X:template noname(indent="'
'") = "*" {
        !{$indent}

        X:if "name()='xsl:template'" {
                !{$indent}
        }

        X:copy {
           X:copy-of "@*"
           !!( indent = "concat($indent, $indent-increment)" );
           X:if "./* " { !{$indent}  }
        }
}

 
X:template = "comment()|processing-instruction()" {
    X:copy;
}

<!--
X:template ="text()[normalize-space(.)='']" {}
-->

}