[oe] build problem with angstrom-version.bb

[Sledz, Steffen]

After upgrading today i get this:

NOTE: Running task 1344 of 1610 (ID: 172, /opt/openembedded/packages/angstrom/angstrom-version.bb, do_package_write_ipk)
NOTE: package angstrom-version-2008.1-test-20081023: started
NOTE: package angstrom-version-1_2008.1-test-20081023-r1: task do_package_write_ipk: started
NOTE: Task failed: Missing field for ipk generation: 'DISTRO_PR'
NOTE: package angstrom-version-1_2008.1-test-20081023-r1: task do_package_write_ipk: failed

:(