remote rm/prune: print a message when writing packed-refs fails
Until v2.1.0-rc0~22^2~11 (refs.c: add an err argument to repack_without_refs, 2014-06-20), repack_without_refs forgot to provide an error message when commit_packed_refs fails. Even today, it only provides a message for callers that pass a non-NULL err parameter. Internal callers in refs.c pass non-NULL err but "git remote" does not. That means that "git remote rm" and "git remote prune" can fail without printing a message about why. Fix them by passing in a non-NULL err parameter and printing the returned message. This is the last caller to a ref handling function passing err == NULL. A later patch can drop support for err == NULL, avoiding such problems in the future. Signed-off-by: NRonnie Sahlberg <sahlberg@google.com> Signed-off-by: NJonathan Nieder <jrnieder@gmail.com> Reviewed-by: NMichael Haggerty <mhagger@alum.mit.edu> Signed-off-by: NJunio C Hamano <gitster@pobox.com>
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