Only unset in local config

Author: smashwilson

lib/controllers/git-tab-controller.js

@@ -375,13 +375,13 @@ export default class GitTabController extends React.Component {
     const newUsername = this.usernameBuffer.getText();
     const newEmail = this.emailBuffer.getText();
 
-    if (newUsername.length > 0) {
+    if (newUsername.length > 0 || options.global) {
       await this.props.repository.setConfig('user.name', newUsername, options);
     } else {
       await this.props.repository.unsetConfig('user.name');
     }
 
-    if (newEmail.length > 0) {
+    if (newEmail.length > 0 || options.global) {
       await this.props.repository.setConfig('user.email', newEmail, options);
     } else {
       await this.props.repository.unsetConfig('user.email');