fix the problem of last head cannot git

Author: cht

lua/csvtools/header.lua

@@ -5,17 +5,19 @@ local M = {}
 function M.Header()
     local line = unpack(vim.api.nvim_buf_get_lines(0, 0, 1, true))
     local header = {}
-    local cout = 1
     local length = 0
     for i = 1, #line do
         if line:sub(i, i) ~= "," then
             length = length + 1
         else
             table.insert(header, length)
             length = 0
-            cout = cout + 1
         end
     end
+    -- fixbug
+    if length ~= 0 then
+        table.insert(header, length)
+    end
     return header
 end
 return M