coverity#982255 Operands don't affect result

fVal started out as a double, but is now a sal_Int64 since

 commit 353607df2ed59f00ad67a74de29b3db662ea960a
 Author: Lars Langhans <lla@openoffice.org>
 Date:   Mon Oct 9 13:21:27 2000 +0000
    #79269# convert to hyper doesn't use toDouble any longer

so the comparison is always false

Change-Id: Ib0b0a78ba3763fb6564219e69111de13b5afc870
fVal->nVal

Change-Id: Ia5b041094f29e42cb60f2c83888cace42b91cc13