refactor: Jumplist picker uses quickfix entry maker. Delete jumplist entry maker. (#973)

lua/telescope/builtin/internal.lua

@@ -951,15 +951,18 @@ internal.jumplist = function(opts)
   -- reverse the list
   local sorted_jumplist = {}
   for i = #jumplist, 1, -1 do
-    jumplist[i].text = ''
-    table.insert(sorted_jumplist, jumplist[i])
+    if vim.api.nvim_buf_is_valid(jumplist[i].bufnr) then
+      jumplist[i].text = vim.api.nvim_buf_get_lines(jumplist[i].bufnr, jumplist[i].lnum, jumplist[i].lnum+1,
+        false)[1] or ''
+      table.insert(sorted_jumplist, jumplist[i])
+    end
   end
 
   pickers.new(opts, {
     prompt_title = 'Jumplist',
     finder = finders.new_table {
       results = sorted_jumplist,
-      entry_maker = make_entry.gen_from_jumplist(opts),
+      entry_maker = make_entry.gen_from_quickfix(opts),
     },
     previewer = conf.qflist_previewer(opts),
     sorter = conf.generic_sorter(opts),