fixed some double -> Ogre::Real conversion warnings in WaterSample
fixed some double -> Ogre::Real conversion warnings in WaterSample

--HG--
branch : v1-9

jhu-lcsr-forks/ogre,jhu-lcsr-forks/ogre,jhu-lcsr-forks/ogre,jhu-lcsr-forks/ogre,jhu-lcsr-forks/ogre