if else made authorization check unreachable (#90)

lib/call-session.js

@@ -223,7 +223,7 @@ class CallSession extends Emitter {
       if (this.req.locals.application_sid) {
         Object.assign(headers, {'X-Application-Sid': this.req.locals.application_sid});
       }
-      else if (this.req.authorization) {
+      if (this.req.authorization) {
         if (this.req.authorization.grant && this.req.authorization.grant.application_sid) {
           Object.assign(headers, {'X-Application-Sid': this.req.authorization.grant.application_sid});
         }