* luci/libs: uvl: fix possible "attempt to index field '?' (a nil value)" in uvl...

diff --git a/libs/uvl/luasrc/uvl.lua b/libs/uvl/luasrc/uvl.lua
index 66e7eea..0823028 100644 (file)
--- a/libs/uvl/luasrc/uvl.lua
+++ b/libs/uvl/luasrc/uvl.lua
@@ -777,9 +777,10 @@ function uvlitem.config(self, opt)
        local c
 
        if #self.cref == 4 or #self.cref == 3 then
-               c = self.c[self.cref[2]][self.cref[3]]
+               c = self.c and self.c[self.cref[2]] or nil
+               c = c      and c[self.cref[3]]      or nil
        elseif #self.cref == 2 then
-               c = self.c[self.cref[2]]
+               c = self.c and self.c[self.cref[2]] or nil
        else
                c = self.c
        end