buildhistory: fix latest_srcrev in the common case
buildhistory was writing srcrevs.values() as SRCREV when only one
srcrev/branch exists. This returns a view of the dictionary values in python
3, and used to return a list in python 2, neither of which is an appropriate
value for SRCREV. It was resulting in latest_srcrev files like this:
# SRCREV = "
346584bf6e38232be8773c24fd7dedcbd7b3d9ed"
SRCREV = "dict_values(['
346584bf6e38232be8773c24fd7dedcbd7b3d9ed'])"
Which in turn would result in invalid output in buildhistory-collect-srcrevs.
Fix by calling `next(iter())` on the `.values()`
Signed-off-by: Christopher Larson <chris_larson@mentor.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
