crfpos.cpp: use !empty() instead of 'size() > 0'
crfpos.cpp: use !empty() instead of 'size() > 0'

Use empty() since it should be prefered as it has, following the
standard, a constant time complexity regardless of the containter
type. The same is not guaranteed for size().

Signed-off-by: Danny Al-Gaaf <473e39ac77cf392f0dd9bacde8409de76c14d006@bisect.de>

ryanniehaus/lucida,seong889/lucida,wathek/sirius,madtreat/sirius,ffund/sirius,lacvapps/sirius,yunshengb/lucida,apfritts/sirius,seong889/lucida,Zeioth/sirius,yqzhang/sirius,seong889/lucida,seong889/lucida,yqzhang/sirius,ffund/sirius,erdincay/sirius,kolewu/sirius,rowhit/sirius,wathek/sirius,AlphaStaxLLC/sirius,xpndlabs/sirius,yqzhang/sirius,yangeagle/sirius,wathek/sirius,erdincay/sirius,apfritts/sirius,erdincay/sirius,hoehnp/sirius,yqzhang/sirius,kolewu/sirius,hoehnp/sirius,Zeioth/sirius,Vivek065/sirius,madtreat/sirius,hoehnp/sirius,AlphaStaxLLC/sirius,linearregression/sirius,yangeagle/sirius,seong889/lucida,zitterbewegung/sirius,AlphaStaxLLC/sirius,jhauswald/lucida,ffund/sirius,hoangt/sirius,hoangt/sirius,Vivek065/sirius,linearregression/sirius,Zeioth/sirius,yqzhang/sirius,zitterbewegung/sirius,KitoHo/sirius,AlphaStaxLLC/sirius,madtreat/sirius,yunshengb/lucida,madtreat/sirius,rowhit/sirius,Vivek065/sirius,seong889/lucida,zitterbewegung/sirius,jhauswald/lucida,yqzhang/sirius,niiashikwei/sirius,xpndlabs/sirius,KitoHo/sirius,erdincay/sirius,wathek/sirius,claritylab/sirius,zitterbewegung/sirius,claritylab/sirius,yangeagle/sirius,kolewu/sirius,hoehnp/sirius,lacvapps/sirius,wathek/sirius,rowhit/sirius,kolewu/sirius,kolewu/sirius,zitterbewegung/sirius,yunshengb/lucida,KitoHo/sirius,lacvapps/sirius,KitoHo/sirius,enlighter/sirius,madtreat/sirius,xpndlabs/sirius,Zeioth/sirius,yunshengb/lucida,niiashikwei/sirius,apfritts/sirius,KitoHo/sirius,hoangt/sirius,jhauswald/lucida,ffund/sirius,apfritts/sirius,seong889/lucida,claritylab/sirius,AlphaStaxLLC/sirius,Vivek065/sirius,jhauswald/lucida,ryanniehaus/lucida,linearregression/sirius,enlighter/sirius,ryanniehaus/lucida,ffund/sirius,linearregression/sirius,jhauswald/lucida,yunshengb/lucida,Vivek065/sirius,AlphaStaxLLC/sirius,Zeioth/sirius,yunshengb/lucida,Zeioth/sirius,ryanniehaus/lucida,madtreat/sirius,enlighter/sirius,kolewu/sirius,niiashikwei/sirius,jhauswald/lucida,linearregression/sirius,niiashikwei/sirius,kolewu/sirius,niiashikwei/sirius,linearregression/sirius,ryanniehaus/lucida,ffund/sirius,erdincay/sirius,Vivek065/sirius,claritylab/sirius,Vivek065/sirius,seong889/lucida,rowhit/sirius,apfritts/sirius,KitoHo/sirius,apfritts/sirius,wathek/sirius,ffund/sirius,xpndlabs/sirius,apfritts/sirius,seong889/lucida,hoangt/sirius,rowhit/sirius,AlphaStaxLLC/sirius,xpndlabs/sirius,zitterbewegung/sirius,lacvapps/sirius,enlighter/sirius,KitoHo/sirius,wathek/sirius,xpndlabs/sirius,hoangt/sirius,jhauswald/lucida,Zeioth/sirius,hoangt/sirius,hoangt/sirius,xpndlabs/sirius,enlighter/sirius,lacvapps/sirius,lacvapps/sirius,claritylab/sirius,ryanniehaus/lucida,enlighter/sirius,hoehnp/sirius,yqzhang/sirius,yangeagle/sirius,enlighter/sirius,ryanniehaus/lucida,erdincay/sirius,rowhit/sirius,niiashikwei/sirius,claritylab/sirius,yunshengb/lucida,yangeagle/sirius,hoehnp/sirius,yunshengb/lucida,yangeagle/sirius,madtreat/sirius,lacvapps/sirius,erdincay/sirius,rowhit/sirius,zitterbewegung/sirius,hoehnp/sirius,jhauswald/lucida,claritylab/sirius,linearregression/sirius,yangeagle/sirius,niiashikwei/sirius