patch 8.1.1350: "W" for wrapping not shown when more than 99 matches

Problem:    "W" for wrapping not shown when more than 99 matches.
Solution:   Adjust check for length. (Masato Nishihata, closes #4388)
diff --git a/src/testdir/test_search_stat.vim b/src/testdir/test_search_stat.vim
index 107cd54..322d137 100644
--- a/src/testdir/test_search_stat.vim
+++ b/src/testdir/test_search_stat.vim
@@ -40,12 +40,20 @@
   let g:a = execute(':unsilent :norm! n')
   let stat = '\[>99/>99\]'
   call assert_match(pat .. stat, g:a)
+  call cursor(line('$'), 1)
+  let g:a = execute(':unsilent :norm! n')
+  let stat = '\[1/>99\] W'
+  call assert_match(pat .. stat, g:a)
 
   " 5) Many matches
   call cursor(1, 1)
   let g:a = execute(':unsilent :norm! n')
   let stat = '\[2/>99\]'
   call assert_match(pat .. stat, g:a)
+  call cursor(1, 1)
+  let g:a = execute(':unsilent :norm! N')
+  let stat = '\[>99/>99\] W'
+  call assert_match(pat .. stat, g:a)
 
   " 6) right-left
   if exists("+rightleft")