[Dev] Simplify the branching with early return in JSon handler.
[Dev] Simplify the branching with early return in JSon handler.

jwakely/airinv,airsim/airinv,airsim/airinv,airsim/airinv,airsim/airinv,airsim/airinv,jwakely/airinv,jwakely/airinv,airsim/airinv,airsim/airinv,jwakely/airinv,airsim/airinv,jwakely/airinv,airsim/airinv,jwakely/airinv,jwakely/airinv,jwakely/airinv,jwakely/airinv