fix null value problem

src/main/resources/static/js/webauthn.js

@@ -329,6 +329,14 @@ function makeCredential(advancedOptions) {
             }
             if ('authenticatorSelection' in options && options.authenticatorSelection != null) {
                 makeCredentialOptions.authenticatorSelection = options.authenticatorSelection;
+                if('authenticatorAttachment' in makeCredentialOptions.authenticatorSelection && makeCredentialOptions.authenticatorSelection.authenticatorAttachment == null)
+                    makeCredentialOptions.authenticatorSelection.authenticatorAttachment = undefined
+                if('residentKey' in makeCredentialOptions.authenticatorSelection && makeCredentialOptions.authenticatorSelection.residentKey == null)
+                    makeCredentialOptions.authenticatorSelection.residentKey = undefined
+                if('requireResidentKey' in makeCredentialOptions.authenticatorSelection && makeCredentialOptions.authenticatorSelection.requireResidentKey == null)
+                    makeCredentialOptions.authenticatorSelection.requireResidentKey = undefined
+                if('userVerification' in makeCredentialOptions.authenticatorSelection && makeCredentialOptions.authenticatorSelection.userVerification == null)
+                    makeCredentialOptions.authenticatorSelection.userVerification = undefined
             }
             if ('attestation' in options && options.attestation != null) {
                 makeCredentialOptions.attestation = options.attestation;