fix: stale lnum in buffer previewer (#1229)

* fix: lnum to jump to might be stale eg when resuming buffer picker after changes

lua/telescope/make_entry.lua

@@ -452,6 +452,7 @@ function make_entry.gen_from_buffer(opts)
     local readonly = vim.api.nvim_buf_get_option(entry.bufnr, "readonly") and "=" or " "
     local changed = entry.info.changed == 1 and "+" or " "
     local indicator = entry.flag .. hidden .. readonly .. changed
+    local line_count = vim.api.nvim_buf_line_count(entry.bufnr)
 
     return {
       valid = true,
@@ -462,8 +463,8 @@ function make_entry.gen_from_buffer(opts)
 
       bufnr = entry.bufnr,
       filename = bufname,
-
-      lnum = entry.info.lnum ~= 0 and entry.info.lnum or 1,
+      -- account for potentially stale lnum as getbufinfo might not be updated or from resuming buffers picker
+      lnum = entry.info.lnum ~= 0 and math.max(math.min(entry.info.lnum, line_count), 1) or 1,
       indicator = indicator,
     }
   end