Fix (#14)

Reviewed-on: #14

src/lib.rs

@@ -58,8 +58,10 @@ impl SendMsg {
             };
 
             let url = twilio::api::twilio_url(&self.config.account_sid);
-            let headers =
+            let headers = match twilio::api::init_headers(
-                match twilio::api::init_headers(&self.config.account_sid, &self.config.auth_token) {
+                &self.config.account_sid,
+                &self.config.auth_token,
+            ) {
                 Ok(headers) => headers,
                 Err(err) => {
                     return Err(std::io::Error::other(err));