Fix reflog parsing for a malformed branch switching entry

diff --git a/sha1_name.c b/sha1_name.c
index 9d544a26332d14998bdcae0474bb66f1f542a4b4..f54b6cb36a0a67f6319d3ff56e92bbac55ecd639 100644 (file)
--- a/sha1_name.c
+++ b/sha1_name.c
@@ -727,7 +727,7 @@ static int grab_nth_branch_switch(unsigned char *osha1, unsigned char *nsha1,
                        target += 4;
        }
 
-       if (!match)
+       if (!match || !target)
                return 0;
 
        len = target - match - 4;