Fix clang warning in lowpan unit test. (#975)
Fix clang warning in lowpan unit test. (#975)


erja-gp/openthread,xiaom-GitHub/openthread,Zolertia/openthread,JakubBrachTieto/openthread,turon/openthread,erja-gp/openthread,jwhui/openthread,chshu/openthread,erja-gp/openthread,gandreello/openthread,turon/openthread,georgecpr/openthread,mszczodrak/openthread,xiaom-GitHub/openthread,abtink/openthread,openthread/openthread,JakubBrachTieto/openthread,chshu/openthread,JakubBrachTieto/openthread,openthread/openthread,mszczodrak/openthread,bukepo/openthread,LeZhang2016/openthread,bukepo/openthread,openthread/openthread,erja-gp/openthread,mszczodrak/openthread,gandreello/openthread,jjlee9/openthread,jjlee3/openthread,fbsder/openthread,erja-gp/openthread,pvanhorn/openthread,xiaom-GitHub/openthread,abtink/openthread,vaas-krish/openthread,gandreello/openthread,pvanhorn/openthread,turon/openthread,georgecpr/openthread,fbsder/openthread,vaas-krish/openthread,GiedriusM/openthread,nibanks/openthread,LeZhang2016/openthread,JakubBrachTieto/openthread,Zolertia/openthread,turon/openthread,librasungirl/openthread,librasungirl/openthread,GiedriusM/openthread,chshu/openthread,pvanhorn/openthread,nibanks/openthread,xiaom-GitHub/openthread,JakubBrachTieto/openthread,aeliot/openthread,aeliot/openthread,aeliot/openthread,fbsder/openthread,bukepo/openthread,GiedriusM/openthread,GiedriusM/openthread,mszczodrak/openthread,JakubBrachTieto/openthread,Zolertia/openthread,mszczodrak/openthread,librasungirl/openthread,openthread/openthread,georgecpr/openthread,LeZhang2016/openthread,fbsder/openthread,LeZhang2016/openthread,lanyuwen/openthread,srickardti/openthread,pvanhorn/openthread,mszczodrak/openthread,xiaom-GitHub/openthread,pvanhorn/openthread,LeZhang2016/openthread,jjlee9/openthread,GiedriusM/openthread,jwhui/openthread,lanyuwen/openthread,nibanks/openthread,abtink/openthread,lanyuwen/openthread,jwhui/openthread,vaas-krish/openthread,gandreello/openthread,abtink/openthread,xiaom-GitHub/openthread,georgecpr/openthread,nibanks/openthread,jjlee3/openthread,nibanks/openthread,vaas-krish/openthread,georgecpr/openthread,lanyuwen/openthread,gandreello/openthread,aeliot/openthread,jjlee9/openthread,chshu/openthread,jjlee3/openthread,aeliot/openthread,jjlee3/openthread,lanyuwen/openthread,aeliot/openthread,jwhui/openthread,vaas-krish/openthread,bukepo/openthread,gandreello/openthread,jjlee9/openthread,jjlee3/openthread,erja-gp/openthread,fbsder/openthread,georgecpr/openthread,srickardti/openthread,librasungirl/openthread,chshu/openthread,nibanks/openthread,lanyuwen/openthread,srickardti/openthread,chshu/openthread,srickardti/openthread,jjlee9/openthread,pvanhorn/openthread,jjlee9/openthread,Zolertia/openthread,fbsder/openthread,Zolertia/openthread,LeZhang2016/openthread,vaas-krish/openthread