for_each_reflog_ent(): extract a helper to process a single entry

diff --git a/archive-tar.c b/archive-tar.c
index dc91c6b50d56ad8fd9921d0e47f5b45cafdcfc4d..0ba3f25cf579d6629566a39d4d5ac19b51293ed5 100644 (file)
--- a/archive-tar.c
+++ b/archive-tar.c
@@ -139,13 +139,13 @@ static void strbuf_append_ext_header(struct strbuf *sb, const char *keyword,
 
 static unsigned int ustar_header_chksum(const struct ustar_header *header)
 {
-       const char *p = (const char *)header;
+       const unsigned char *p = (const unsigned char *)header;
        unsigned int chksum = 0;
-       while (p < header->chksum)
+       while (p < (const unsigned char *)header->chksum)
                chksum += *p++;
        chksum += sizeof(header->chksum) * ' ';
        p += sizeof(header->chksum);
-       while (p < (const char *)header + sizeof(struct ustar_header))
+       while (p < (const unsigned char *)header + sizeof(struct ustar_header))
                chksum += *p++;
        return chksum;
 }