show next warning

fixes bug in warnings where only the first message is shown when multiple warnings are queued.

app/src/main/java/com/forrestguice/suntimeswidget/SuntimesWarning.java

@@ -178,7 +178,7 @@ public void onDismissed(Snackbar snackbar, int event)
             {
                 case DISMISS_EVENT_SWIPE:
                     wasDismissed = true;
-                    snackbar.get().getView().post(new Runnable() {
+                    snackbar.getView().post(new Runnable() {
                         @Override
                         public void run() {
                             showNextWarning();