@param out_ buffer to store the formatted diff statistics in.
@param stats A git_diff_stats generated by one of the above functions.
@param format Formatting option.
@param width Target width for output (only affects git_diff_stats_format_t.GIT_DIFF_STATS_FULL)
@return 0 on success; non-zero on error
Print diff statistics to a git_buf.
@param out_ buffer to store the formatted diff statistics in. @param stats A git_diff_stats generated by one of the above functions. @param format Formatting option. @param width Target width for output (only affects git_diff_stats_format_t.GIT_DIFF_STATS_FULL) @return 0 on success; non-zero on error