vim-patch:8.0.0339: illegal memory access with vi' (#7794)

Problem:    Illegal memory access with vi'
Solution:   For quoted text objects bail out if the Visual area spans more
            than one line.

46522af724

src/nvim/testdir/test_visual.vim

@@ -43,3 +43,10 @@ func Test_dotregister_paste()
   call assert_equal('hello world world', getline(1))
   q!
 endfunc
+
+func Test_Visual_inner_quote()
+  new
+  normal oxX
+  normal vki'
+  bwipe!
+endfunc