Minor bug-fix in src/waves2Foam/waveTheories/irregular/irregular/irregular.C



git-svn-id: svn://svn.code.sf.net/p/openfoam-extend/svn/trunk/Breeder_1.6/other/waves2Foam@2017 e4e07f05-0c2f-0410-a05a-b8ba57e0c909