git-p4: Unset P4DIFF environment variable when using 'p4 -du diff'

diff --git a/revision.h b/revision.h
index b5f01f8309b6630be7169eb72f613e5deb0ebcab..c8b3b948ecc1cc8b45859a6e1ea11763addfb8b5 100644 (file)
--- a/revision.h
+++ b/revision.h
@@ -75,7 +75,7 @@ struct rev_info {
        struct log_info *loginfo;
        int             nr, total;
        const char      *mime_boundary;
-       const char      *message_id;
+       char            *message_id;
        const char      *ref_message_id;
        const char      *add_signoff;
        const char      *extra_headers;