fix default avatar not proxying; simplify /_/info endpoint code and make it dynamic incase you somehow change the settings at runtime

lib/sc/user.go

@@ -158,6 +158,11 @@ func (u *User) Fix(large bool) {
 		u.Avatar = strings.Replace(u.Avatar, "-large.", "-t200x200.", 1)
 	}
 
+	// maybe hardcoding it isn't the best decision, but it should be ok
+	if u.Avatar == "https://a1.sndcdn.com/images/default_avatar_large.png" {
+		u.Avatar = ""
+	}
+
 	if cfg.ProxyImages && u.Avatar != "" {
 		u.Avatar = "/_/proxy/images?url=" + url.QueryEscape(u.Avatar)
 	}

main.go

@@ -149,18 +149,12 @@ func main() {
 			FullyPreloadTrack bool
 		}
 
-		data, err := cfg.JSON.Marshal(info{
-			ProxyImages:       cfg.ProxyImages,
-			ProxyStreams:      cfg.ProxyStreams,
-			FullyPreloadTrack: cfg.FullyPreloadTrack,
-		})
-		if err != nil {
-			log.Println("Failed to marshal instance info:", err)
-		}
-
 		app.Get("/_/info", func(c *fiber.Ctx) error {
-			c.Set("Content-Type", "application/json")
-			return c.Send(data)
+			return c.JSON(info{
+				ProxyImages:       cfg.ProxyImages,
+				ProxyStreams:      cfg.ProxyStreams,
+				FullyPreloadTrack: cfg.FullyPreloadTrack,
+			})
 		})
 	}