调整三方登录解绑时的逻辑

app/Endpoint/Api/Http/Controllers/Auth/SocialiteAuthController.php

@@ -222,8 +222,11 @@ class SocialiteAuthController extends Controller
                     break;
             }
         }
-        //解绑以前的关系
-        SocialiteUser::where('user_id', $user->id)->update([
+        //解绑对应三方以前的关系
+        SocialiteUser::where([
+            'user_id' => $user->id,
+            'socialite_type' => $socialite['socialite_type'],
+        ])->update([
             'user_id' => null,
         ]);
         //绑定用户和三方信息关系