client: S1031: unnecessary nil check around range (gosimple)

    client/request.go:245:2: S1031: unnecessary nil check around range (gosimple)
        if headers != nil {
        ^

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

client/request.go

@@ -242,10 +242,8 @@ func (cli *Client) addHeaders(req *http.Request, headers headers) *http.Request
 		req.Header.Set(k, v)
 	}
 
-	if headers != nil {
-		for k, v := range headers {
-			req.Header[k] = v
-		}
+	for k, v := range headers {
+		req.Header[k] = v
 	}
 	return req
 }