prevent crash when trying to select prev/next area when there are none
prevent crash when trying to select prev/next area when there are none


wingyplus/wmii,jerluc/wmii,sigmavirus24/wmii,Sirikid/wmii,jerluc/wmii,sigmavirus24/wmii,darkfeline/wmii,wingyplus/wmii,rvedam/wmii,Sirikid/wmii,rvedam/wmii,wingyplus/wmii,darkfeline/wmii,darkfeline/wmii,darkfeline/wmii,rvedam/wmii,jerluc/wmii,Sirikid/wmii,sigmavirus24/wmii,wingyplus/wmii,darkfeline/wmii,rvedam/wmii,Sirikid/wmii,wingyplus/wmii,Sirikid/wmii,jerluc/wmii,sigmavirus24/wmii,sigmavirus24/wmii,jerluc/wmii,rvedam/wmii