Add missing consumedInExp case for DoLoop.
Add missing consumedInExp case for DoLoop.

CulpaBS/wbBach,diku-dk/futhark,mrakgr/futhark,mrakgr/futhark,diku-dk/futhark,diku-dk/futhark,mrakgr/futhark,diku-dk/futhark,HIPERFIT/futhark,diku-dk/futhark,ihc/futhark,HIPERFIT/futhark,HIPERFIT/futhark,ihc/futhark,ihc/futhark