Fix checkstyle error
Fix checkstyle error

Mr-DLib/jabref,JabRef/jabref,jhshinn/jabref,JabRef/jabref,sauliusg/jabref,tobiasdiez/jabref,oscargus/jabref,grimes2/jabref,tobiasdiez/jabref,sauliusg/jabref,shitikanth/jabref,Mr-DLib/jabref,shitikanth/jabref,Siedlerchr/jabref,bartsch-dev/jabref,oscargus/jabref,zellerdev/jabref,oscargus/jabref,shitikanth/jabref,grimes2/jabref,JabRef/jabref,zellerdev/jabref,bartsch-dev/jabref,JabRef/jabref,zellerdev/jabref,Mr-DLib/jabref,zellerdev/jabref,jhshinn/jabref,Mr-DLib/jabref,grimes2/jabref,Siedlerchr/jabref,oscargus/jabref,bartsch-dev/jabref,grimes2/jabref,tobiasdiez/jabref,Mr-DLib/jabref,bartsch-dev/jabref,sauliusg/jabref,shitikanth/jabref,sauliusg/jabref,grimes2/jabref,oscargus/jabref,tobiasdiez/jabref,jhshinn/jabref,Siedlerchr/jabref,jhshinn/jabref,Siedlerchr/jabref,zellerdev/jabref,bartsch-dev/jabref,jhshinn/jabref,shitikanth/jabref