patch 9.0.0291: test failing

Problem:    Test failing.
Solution:   Run test with cmdheight=0 last.

src/testdir/test_messages.vim

@@ -387,7 +387,9 @@ func Test_fileinfo_after_echo()
   call delete('b.txt')
 endfunc
 
-func Test_cmdheight_zero()
+" FIXME: running this last as it seems to cause
+" Test_mapping_at_hit_return_prompt() to faile
+func Test_x_cmdheight_zero()
   enew
   set cmdheight=0
   set showcmd

src/version.c

@@ -707,6 +707,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    291,
 /**/
     290,
 /**/