Bug 686601: Fix compiler warnings in init_blinding_params and get_blinding_params introduced in bug 599831.  r=rrelyea.
Bug 686601: Fix compiler warnings in init_blinding_params and
get_blinding_params introduced in bug 599831.  r=rrelyea.

ekr/nss-old,ekr/nss-old,nmav/nss,ekr/nss-old,ekr/nss-old,ekr/nss-old,nmav/nss,nmav/nss,nmav/nss,nmav/nss,ekr/nss-old,nmav/nss,nmav/nss,ekr/nss-old