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)

src/search.c

@@ -5012,7 +5012,7 @@ search_stat(
 	}
 
 	len = STRLEN(t);
-	if (show_top_bot_msg && len + 3 < SEARCH_STAT_BUF_LEN)
+	if (show_top_bot_msg && len + 2 < SEARCH_STAT_BUF_LEN)
 	{
 	    STRCPY(t + len, " W");
 	    len += 2;

src/testdir/test_search_stat.vim

@@ -40,12 +40,20 @@ func! Test_search_stat()
   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")

src/version.c

@@ -767,6 +767,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1350,
 /**/
     1349,
 /**/