Fix printf error caught by lint
Fix printf error caught by lint

paulbellamy/weave,tomwilkie/weave,rade/weave,paulbellamy/weave,paulbellamy/weave,rade/weave,aaam/weave,weaveworks/weave,rade/weave,tomwilkie/weave,aaam/weave,tomwilkie/weave,n054/weave,aaam/weave,dpw/weave,tomwilkie/weave,dpw/weave,weaveworks/weave,dpw/weave,aaam/weave,weaveworks/weave,weaveworks/weave,n054/weave,dpw/weave,tomwilkie/weave,n054/weave,rade/weave,rade/weave,dpw/weave,n054/weave,n054/weave,aaam/weave,paulbellamy/weave