Merge pull request #1116 from LiskHQ/1090-register-delegate-name-inpu…

…t-empty-sends-request

Register Delegate , prevent sent request to core on empty username - Closes #1090

src/components/registerDelegate/steps/choose/choose.js

@@ -55,7 +55,7 @@ class Choose extends React.Component {
       },
     });
 
-    if (error) {
+    if (error || value === '') {
       return;
     }