virDomainNetIPInfoParseXML: Remove pointless automatic clearing of 'route' and 'ip'
virDomainNetIPInfoParseXML: Remove pointless automatic clearing of 'route' and 'ip'

The variables are only used in code paths which can't fail after they
are allocated.

Additionally decrease scope of the variables.

Signed-off-by: Peter Krempa <2cf5c04c61aa466e4a47bfedc747d17279c72ffc@redhat.com>
Reviewed-by: Ján Tomko <4cab11cfb98d3c937327354a78eb07dbb6ee2bc6@redhat.com>

libvirt/libvirt,zippy2/libvirt,olafhering/libvirt,jfehlig/libvirt,olafhering/libvirt,jfehlig/libvirt,jfehlig/libvirt,libvirt/libvirt,zippy2/libvirt,libvirt/libvirt,zippy2/libvirt,olafhering/libvirt,zippy2/libvirt,jfehlig/libvirt,libvirt/libvirt,olafhering/libvirt