Freeze static strings in QueryParser#normalize_params
Freeze static strings in QueryParser#normalize_params

gioele/rack,ngpestelos/rack,rwz/rack,wjordan/rack,wjordan/rack,Eric-Guo/rack,deepj/rack,imtayadeway/rack,wjordan/rack,gioele/rack,gfvcastro/rack,Eric-Guo/rack,ngpestelos/rack,gfvcastro/rack,ngpestelos/rack,imtayadeway/rack,imtayadeway/rack,Eric-Guo/rack,deepj/rack,gfvcastro/rack,deepj/rack,rwz/rack,gioele/rack,rwz/rack