githooks documentation: add a note about the +x mode

diff --git a/archive-tar.c b/archive-tar.c
index 13029619e5ec34bac4ba61a6fc08800ab36f4a1b..ba890ebdecd8672aeb32757605c8a2976fa21161 100644 (file)
--- a/archive-tar.c
+++ b/archive-tar.c
@@ -124,11 +124,10 @@ static int write_tar_entry(struct archiver_args *args,
                unsigned int mode, void *buffer, unsigned long size)
 {
        struct ustar_header header;
-       struct strbuf ext_header;
+       struct strbuf ext_header = STRBUF_INIT;
        int err = 0;
 
        memset(&header, 0, sizeof(header));
-       strbuf_init(&ext_header, 0);
 
        if (!sha1) {
                *header.typeflag = TYPEFLAG_GLOBAL_HEADER;
@@ -211,10 +210,9 @@ static int write_tar_entry(struct archiver_args *args,
 static int write_global_extended_header(struct archiver_args *args)
 {
        const unsigned char *sha1 = args->commit_sha1;
-       struct strbuf ext_header;
+       struct strbuf ext_header = STRBUF_INIT;
        int err;
 
-       strbuf_init(&ext_header, 0);
        strbuf_append_ext_header(&ext_header, "comment", sha1_to_hex(sha1), 40);
        err = write_tar_entry(args, NULL, NULL, 0, 0, ext_header.buf,
                        ext_header.len);