luci_olsr_fix_empty_result.patch

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Handle empty json request result gracefully.

Signed-off-by: Lars Kruse <devel@sumpfralle.de>

--- a/luci/applications/luci-app-olsr/luasrc/controller/olsr.lua
+++ b/luci/applications/luci-app-olsr/luasrc/controller/olsr.lua
@@ -390,9 +390,9 @@ function fetch_jsoninfo(otable)
 
   if jsonreq4 ~= "" then
       has_v4 = 1
-      jsondata4 = json.decode(jsonreq4)
+      jsondata4 = json.decode(jsonreq4) or {}
       if otable == 'status' then
-          data4 = jsondata4 or {}
+          data4 = jsondata4
       else
           data4 = jsondata4[otable] or {}
       end