Fix a small security issue in OAuth
Fix a small security issue in OAuth

This prevents possibly private information from leaking in an error
message.

kotfic/girder,jbeezley/girder,jbeezley/girder,girder/girder,adsorensen/girder,RafaelPalomar/girder,msmolens/girder,essamjoubori/girder,data-exp-lab/girder,RafaelPalomar/girder,Xarthisius/girder,Xarthisius/girder,Xarthisius/girder,manthey/girder,opadron/girder,Xarthisius/girder,RafaelPalomar/girder,essamjoubori/girder,opadron/girder,data-exp-lab/girder,jbeezley/girder,kotfic/girder,RafaelPalomar/girder,opadron/girder,manthey/girder,sutartmelson/girder,kotfic/girder,sutartmelson/girder,adsorensen/girder,adsorensen/girder,Kitware/girder,msmolens/girder,kotfic/girder,kotfic/girder,salamb/girder,sutartmelson/girder,adsorensen/girder,data-exp-lab/girder,Kitware/girder,girder/girder,essamjoubori/girder,msmolens/girder,opadron/girder,sutartmelson/girder,girder/girder,salamb/girder,salamb/girder,msmolens/girder,RafaelPalomar/girder,Xarthisius/girder,data-exp-lab/girder,essamjoubori/girder,data-exp-lab/girder,adsorensen/girder,opadron/girder,salamb/girder,sutartmelson/girder,msmolens/girder,essamjoubori/girder,manthey/girder,girder/girder,Kitware/girder,Kitware/girder,manthey/girder,jbeezley/girder,salamb/girder