ignore json parsing error

tools.lua

@@ -72,7 +72,7 @@ function tools.req(url, par, f, dbg)
     if fr then
       par[ft] = {
         filename = fn,
-	data = fr:read '*a'
+        data = fr:read '*a'
       }
       fr:close()
     else par[ft] = fn end
@@ -84,8 +84,8 @@ function tools.req(url, par, f, dbg)
   if dbg then print(url, succ, res, par)
     -- dump(par))
   end
-  res = json.decode(res or '{}')
-  if not succ or not res then return {}, false end
+  local s, res = pcall(json.decode, res or '{}')
+  if not s or not succ or not res then return {}, false end
   return res, true
 end