Fixed cut & paster error in io scheduler

[headinthebox]

Thanks @samuelgruetter for pointing this out.

[cloudbees-pull-request-builder]

RxJava-pull-requests #750 FAILURE
Looks like there's a problem with this pull request

[headinthebox]

Builds on my machine ... obviously

GitHub pull request #827 to Netflix/RxJava
[EnvInject] - Loading node environment variables.
Building remotely on 6880a4f9 in workspace /scratch/jenkins/workspace/RxJava-pull-requests
$ sudo /opt/jenkins/sbin/mount-webdav https://repository-netflixoss.forge.cloudbees.com/private netflixoss alert
/private/netflixoss is not a mountpoint
webdav mount try 1
/private/netflixoss is not a mountpoint
p11-kit: couldn't read config file: /etc/pkcs11/modules/.
/private/netflixoss is a mountpoint
Fetching changes from the remote Git repository
Fetching upstream changes from git://github.com/Netflix/RxJava.git
FATAL: Could not checkout master with start point origin/master