Fix stupid order-of-magnitude lexer bug.
Fix stupid order-of-magnitude lexer bug.

diku-dk/futhark,diku-dk/futhark,ihc/futhark,HIPERFIT/futhark,diku-dk/futhark,diku-dk/futhark,ihc/futhark,ihc/futhark,HIPERFIT/futhark,diku-dk/futhark,HIPERFIT/futhark