Fixed header inheritance routine in order to not override fields which exist in original header (Issue-47)
Fixed header inheritance routine in order to not override fields which exist in original header (Issue-47)

Broken since r846
qboss/unimrcp,iitdlaxman/unimrcp,qboss/unimrcp,qboss/unimrcp,iitdlaxman/unimrcp,iitdlaxman/unimrcp,iitdlaxman/temp,iitdlaxman/temp,iitdlaxman/temp