Fixes running of performance test.
Fixes running of performance test.

ycsoft/lua-rapidjson,xpol/lua-rapidjson,ycsoft/lua-rapidjson,tvbeat/lua-rapidjson,ignacio/lua-rapidjson,ycsoft/lua-rapidjson,ignacio/lua-rapidjson,ignacio/lua-rapidjson,ycsoft/lua-rapidjson,tvbeat/lua-rapidjson,xpol/lua-rapidjson,ignacio/lua-rapidjson