t5100: use ancient encoding syntax for backwards compatibility

diff --git a/builtin-log.c b/builtin-log.c
index 5eaec5d24e6ca70af2879ce9439eb2ba831211b6..58db9592c93070176273ff8c843f382b30174a32 100644 (file)
--- a/builtin-log.c
+++ b/builtin-log.c
@@ -619,7 +619,7 @@ static void make_cover_letter(struct rev_info *rev, int use_stdout,
        struct shortlog log;
        struct strbuf sb = STRBUF_INIT;
        int i;
-       const char *encoding = "utf-8";
+       const char *encoding = "UTF-8";
        struct diff_options opts;
        int need_8bit_cte = 0;
        struct commit *commit = NULL;