fix: return after writing 500 http headers

Signed-off-by: HeshamTB <hishaminv@gmail.com>

main.go

@@ -60,12 +60,14 @@ func handleRoot(w http.ResponseWriter, r *http.Request) {
     if err != nil {
         log.Println(err.Error())
         w.WriteHeader(http.StatusInternalServerError)
+        return
     }
 
     err = writeFormattedIP(w, Type, ip)
     if err != nil {
         log.Println(err.Error())
         w.WriteHeader(http.StatusInternalServerError)
+        return
     }
 }