help: check early if we have a command, if not try a documentation topic

diff --git a/pack-revindex.c b/pack-revindex.c
index a8aa2cd6caefe7d37febdf5c3426cec043492b19..cd300bdff5b524a4d509ba5276e9ef21f443013d 100644 (file)
--- a/pack-revindex.c
+++ b/pack-revindex.c
@@ -40,7 +40,7 @@ static int pack_revindex_ix(struct packed_git *p)
        return -1 - i;
 }
 
-void init_pack_revindex(void)
+static void init_pack_revindex(void)
 {
        int num;
        struct packed_git *p;
@@ -118,9 +118,11 @@ struct revindex_entry *find_pack_revindex(struct packed_git *p, off_t ofs)
        struct pack_revindex *rix;
        struct revindex_entry *revindex;
 
+       if (!pack_revindex_hashsz)
+               init_pack_revindex();
        num = pack_revindex_ix(p);
        if (num < 0)
-               die("internal error: pack revindex uninitialized");
+               die("internal error: pack revindex fubar");
 
        rix = &pack_revindex[num];
        if (!rix->revindex)