patch 8.2.3489: ml_get error after search with range

Problem:    ml_get error after search with range.
Solution:   Limit the line number to the buffer line count.
diff --git a/src/testdir/test_search.vim b/src/testdir/test_search.vim
index bb4e45d..eaf9c23 100644
--- a/src/testdir/test_search.vim
+++ b/src/testdir/test_search.vim
@@ -1989,5 +1989,19 @@
   call feedkeys("??\<C-T>", 'xt')
 endfunc
 
+func Test_search_with_invalid_range()
+  new
+  let lines =<< trim END
+    /\%.v
+    5/
+    c
+  END
+  call writefile(lines, 'Xrangesearch')
+  source Xrangesearch
+
+  bwipe!
+  call delete('Xrangesearch')
+endfunc
+
 
 " vim: shiftwidth=2 sts=2 expandtab