xdl_merge(): make XDL_MERGE_ZEALOUS output simpler

diff --git a/builtin-fast-export.c b/builtin-fast-export.c
index 2136aadfd7831828ee29fbfa9ae7974c65271dee..ef27eee71bdef2cac6f751e07b1da71588989b03 100755 (executable)
--- a/builtin-fast-export.c
+++ b/builtin-fast-export.c
@@ -103,7 +103,7 @@ static void handle_object(const unsigned char *sha1)
        mark_object(object);
 
        printf("blob\nmark :%d\ndata %lu\n", last_idnum, size);
-       if (fwrite(buf, size, 1, stdout) != 1)
+       if (size && fwrite(buf, size, 1, stdout) != 1)
                die ("Could not write blob %s", sha1_to_hex(sha1));
        printf("\n");