* luci/libs: fix possible error when doing sub() on chunk in server.lua

diff --git a/libs/httpd/luasrc/httpd/server.lua b/libs/httpd/luasrc/httpd/server.lua
index 2bb44bd..2c41500 100644 (file)
--- a/libs/httpd/luasrc/httpd/server.lua
+++ b/libs/httpd/luasrc/httpd/server.lua
@@ -124,7 +124,7 @@ function Server.create_client_sources(self, client)
                                or  "Unexpected EOF"
 
                -- Line ok
-               else
+               elseif chunk ~= nil
 
                        -- Strip trailing CR
                        chunk = chunk:gsub("\r$","")