Improve perf of ProcessInternal by ~ 4%
Improve perf of ProcessInternal by ~ 4%

Astn/JSON-RPC.NET,Astn/JSON-RPC.NET,steve600/JSON-RPC.NET,artnim/JSON-RPC.NET,steve600/JSON-RPC.NET,KAAndrey/JSON-RPC.NET,artnim/JSON-RPC.NET,KAAndrey/JSON-RPC.NET,steve600/JSON-RPC.NET,dawesc/JSON-RPC.NET,Astn/JSON-RPC.NET,artnim/JSON-RPC.NET,dawesc/JSON-RPC.NET,KAAndrey/JSON-RPC.NET,dawesc/JSON-RPC.NET