fix again

Author: WhammyLeaf

handlers.go

@@ -546,12 +546,6 @@ func (h *OAuth2Handler) HandleToken(w http.ResponseWriter, r *http.Request) {
 			return
 		}
 
-		if grantType != "authorization_code" {
-			h.logger.Error("OAuth2: Unsupported grant type: %s", grantType)
-			http.Error(w, "Unsupported grant type", http.StatusBadRequest)
-			return
-		}
-
 		// Set redirect URI for token exchange
 		redirectURI := clientRedirectURI
 		if h.config.FixedRedirectURI != "" && !h.isValidRedirectURI(clientRedirectURI) {