git-branch: show detached HEAD

diff --git a/refs.c b/refs.c
index f76b4fe20dea81f99b330103ce9d05cc6364c96c..52057455a20cb4641005c9248b5499cca83c77c1 100644 (file)
--- a/refs.c
+++ b/refs.c
@@ -1025,7 +1025,7 @@ int read_ref_at(const char *ref, unsigned long at_time, int cnt, unsigned char *
        fstat(logfd, &st);
        if (!st.st_size)
                die("Log %s is empty.", logfile);
-       logdata = mmap(NULL, st.st_size, PROT_READ, MAP_PRIVATE, logfd, 0);
+       logdata = xmmap(NULL, st.st_size, PROT_READ, MAP_PRIVATE, logfd, 0);
        close(logfd);
 
        lastrec = NULL;