fix compilation warnings
fix compilation warnings

awpr/wai,tolysz/wai,tolysz/wai,erikd/wai,dylex/wai,erikd/wai,utdemir/wai,sordina/wai,awpr/wai,frontrowed/wai,jberryman/wai,ygale/wai,kazu-yamamoto/wai,urbanslug/wai,dylex/wai,creichert/wai,coypoop/wai,soenkehahn/wai,coypoop/wai,mfine/wai,coypoop/wai,soenkehahn/wai,creichert/wai,ygale/wai,yesodweb/wai,soenkehahn/wai,rgrinberg/wai,sol/wai,rgrinberg/wai,sordina/wai,beni55/wai,frontrowed/wai,mfine/wai,dylex/wai,awpr/wai,mfine/wai,urbanslug/wai,sordina/wai,jberryman/wai,dylex/wai,beni55/wai,iquiw/wai,sol/wai,rgrinberg/wai,soenkehahn/wai,ygale/wai,utdemir/wai,beni55/wai,beni55/wai,tolysz/wai,AndrewRademacher/wai,utdemir/wai,AndrewRademacher/wai,mfine/wai,utdemir/wai,ygale/wai,erikd/wai,frontrowed/wai,iquiw/wai,frontrowed/wai,urbanslug/wai,coypoop/wai,rgrinberg/wai,iquiw/wai,iquiw/wai,tolysz/wai,kazu-yamamoto/wai,AndrewRademacher/wai,jberryman/wai,erikd/wai,awpr/wai,yesodweb/wai,rgrinberg/wai,sol/wai,jberryman/wai,sordina/wai,urbanslug/wai,AndrewRademacher/wai