explicitly close body

main.go

@@ -63,6 +63,7 @@ func createUploadHandler(dir string) http.HandlerFunc {
 			return
 		}
 		defer f.Close()
+		defer r.Body.Close()
 
 		if _, err := io.Copy(f, r.Body); err != nil {
 			httpFail(w, r, "Could not complete upload", err)