Fix clang warnings in candidate.h
Fix clang warnings in candidate.h

TBR=pthatcher@google.com

Review URL: https://webrtc-codereview.appspot.com/527001

git-svn-id: 3dec5013d1058009ad43391d70f26dc8df6acd9d@134 dd674b97-3498-5ee5-1854-bdd07cd0ff33

volkanh/libjingle,iamnpc/libjingle,wangscript/libjingle,deepak899/libjingle,shiquxinkong/jingle,wangscript/libjingle,xhook/libjingle,shiquxinkong/jingle,princeofdarkness76/swtoolkit,goddino/libjingle,deepak899/libjingle,volkanh/libjingle,xhook/libjingle,lukeweber/libjingle-override,MindsIgnited/libjingle,xhook/libjingle,iamnpc/libjingle,bitemyapp/libjingle,vigsterkr/libjingle,vigsterkr/libjingle,goddino/libjingle,goddino/libjingle,shiquxinkong/jingle,bitemyapp/libjingle,xhook/libjingle,iamnpc/libjingle,jgrowl/libjingle,deepak899/libjingle,wangscript/libjingle-1,wangscript/libjingle,princeofdarkness76/swtoolkit,wangscript/libjingle,shiquxinkong/jingle,wangscript/libjingle-1,iamnpc/libjingle,princeofdarkness76/swtoolkit,goddino/libjingle,lukeweber/libjingle-override,lukeweber/libjingle-override,princeofdarkness76/swtoolkit,MindsIgnited/libjingle,princeofdarkness76/swtoolkit,xhook/libjingle,wangscript/libjingle-1,vigsterkr/libjingle,volkanh/libjingle,bitemyapp/libjingle,wangscript/libjingle-1,jgrowl/libjingle,iamnpc/libjingle,vigsterkr/libjingle,wangscript/libjingle,wangscript/libjingle,jgrowl/libjingle,iamnpc/libjingle,deepak899/libjingle,shiquxinkong/jingle,volkanh/libjingle,wangscript/libjingle-1,volkanh/libjingle,MindsIgnited/libjingle,deepak899/libjingle,lukeweber/libjingle-override,jgrowl/libjingle,shiquxinkong/jingle,bitemyapp/libjingle,goddino/libjingle,wangscript/libjingle-1,lukeweber/libjingle-override,bitemyapp/libjingle,jgrowl/libjingle,vigsterkr/libjingle,deepak899/libjingle,wangscript/libjingle-1,volkanh/libjingle,princeofdarkness76/swtoolkit,bitemyapp/libjingle