Added error logging

app/src/main/java/eu/faircode/email/GmailState.java

@@ -158,6 +158,7 @@ public class GmailState {
             long acquired = jobject.getLong("acquired");
             return new GmailState(token, acquired);
         } catch (JSONException ex) {
+            Log.e(ex);
             return new GmailState(password, new Date().getTime());
         }
     }