Style fix in capi core.
Style fix in capi core.

paulromano/openmc,paulromano/openmc,mit-crpg/openmc,liangjg/openmc,liangjg/openmc,liangjg/openmc,amandalund/openmc,mit-crpg/openmc,amandalund/openmc,smharper/openmc,walshjon/openmc,amandalund/openmc,amandalund/openmc,shikhar413/openmc,paulromano/openmc,smharper/openmc,paulromano/openmc,walshjon/openmc,shikhar413/openmc,smharper/openmc,mit-crpg/openmc,walshjon/openmc,smharper/openmc,shikhar413/openmc,liangjg/openmc,shikhar413/openmc,mit-crpg/openmc,walshjon/openmc