bugfix - resolved problem with tolerance in "nearest" when both cfg.frequency and the frequency axis were length 1. The problem was detected by ft_sourceanalysis in test_bug2004 


git-svn-id: svn+ssh://svn.fcdonders.nl/home/svnroot/fieldtrip/trunk@10084 0cf7c7f0-3615-4144-b4e6-68da3bce3cd0