get_parent_class() compile-time evaluation fix (false is returned instead of null)
get_parent_class() compile-time evaluation fix (false is returned instead of null)

git-tfs-id: [http://falcon:8080/tfs/Projects]$/Phalanger/Main;C1788

DEVSENSE/Phalanger,kendallb/Phalanger,kendallb/Phalanger,DEVSENSE/Phalanger,DEVSENSE/Phalanger,diddledan/Phalanger,diddledan/Phalanger,kendallb/Phalanger,DEVSENSE/Phalanger,DEVSENSE/Phalanger,kendallb/Phalanger,diddledan/Phalanger,kendallb/Phalanger,DEVSENSE/Phalanger,diddledan/Phalanger,diddledan/Phalanger,kendallb/Phalanger