updated for version 7.4.646
Problem:    ":bufdo" may start at a deleted buffer.
Solution:   Find the first not deleted buffer. (Shane Harper)
diff --git a/src/testdir/test_command_count.in b/src/testdir/test_command_count.in
index a86931f..bfde053 100644
--- a/src/testdir/test_command_count.in
+++ b/src/testdir/test_command_count.in
@@ -141,6 +141,7 @@
 :let buffers = ''
 :.,$-bufdo let buffers .= ' '.bufnr('%')
 :call add(g:lines, 'bufdo:' . buffers)
+:3bd
 :let buffers = ''
 :3,7bufdo let buffers .= ' '.bufnr('%')
 :call add(g:lines, 'bufdo:' . buffers)