fix #6082: Disable routing for very short distance
fix #6082: Disable routing for very short distance
matej116/cgeo,auricgoldfinger/cgeo,cgeo/cgeo,pstorch/cgeo,Bananeweizen/cgeo,auricgoldfinger/cgeo,mucek4/cgeo,mucek4/cgeo,superspindel/cgeo,rsudev/c-geo-opensource,matej116/cgeo,rsudev/c-geo-opensource,kumy/cgeo,Bananeweizen/cgeo,kumy/cgeo,Bananeweizen/cgeo,superspindel/cgeo,rsudev/c-geo-opensource,kumy/cgeo,S-Bartfast/cgeo,tobiasge/cgeo,pstorch/cgeo,auricgoldfinger/cgeo,matej116/cgeo,tobiasge/cgeo,S-Bartfast/cgeo,mucek4/cgeo,pstorch/cgeo,superspindel/cgeo,cgeo/cgeo,tobiasge/cgeo,cgeo/cgeo,cgeo/cgeo,S-Bartfast/cgeo