Fix default precedence. Ternary operator condition shall not be casted.
Fix default precedence. Ternary operator condition shall not be casted.

Addressing:
item.c: In function 'xccdf_check_to_dom':
item.c:623:4: warning: pointer targets in passing argument 3 of 'xmlNewProp' differ in signedness [-Wpointer-sign]
/usr/include/libxml2/libxml/tree.h:745:3: note: expected 'const xmlChar *' but argument is of type 'char *'
item.c:627:4: warning: pointer targets in passing argument 3 of 'xmlNewProp' differ in signedness [-Wpointer-sign]
/usr/include/libxml2/libxml/tree.h:745:3: note: expected 'const xmlChar *' but argument is of type 'char *'

isimluk/openscap,mpreisler/openscap,redhatrises/openscap,isimluk/openscap,jan-cerny/openscap,mpreisler/openscap,isimluk/openscap,OpenSCAP/openscap,openprivacy/openscap,jan-cerny/openscap,ybznek/openscap,openprivacy/openscap,postfix/openscap,isimluk/openscap,redhatrises/openscap,jan-cerny/openscap,OpenSCAP/openscap,mpreisler/openscap,isimluk/openscap,redhatrises/openscap,ybznek/openscap,OpenSCAP/openscap,OpenSCAP/openscap,postfix/openscap,mpreisler/openscap,ybznek/openscap,ybznek/openscap,mpreisler/openscap,openprivacy/openscap,ybznek/openscap,postfix/openscap,OpenSCAP/openscap,openprivacy/openscap,openprivacy/openscap,Hexadorsimal/openscap,Hexadorsimal/openscap,openprivacy/openscap,Hexadorsimal/openscap,Hexadorsimal/openscap,Hexadorsimal/openscap,postfix/openscap,ybznek/openscap,redhatrises/openscap,jan-cerny/openscap,Hexadorsimal/openscap,postfix/openscap,OpenSCAP/openscap,redhatrises/openscap,mpreisler/openscap,redhatrises/openscap,postfix/openscap,jan-cerny/openscap,isimluk/openscap,jan-cerny/openscap