Fixed issue where the pindrawer wouldn't close when pressing the back button

Clover/app/src/main/java/org/floens/chan/ui/activity/BaseActivity.java

@@ -113,6 +113,15 @@ public abstract class BaseActivity extends ThemeActivity implements PanelSlideLi
         updateIcon();
     }
 
+    @Override
+    public void onBackPressed() {
+        if(pinDrawer.isDrawerOpen(pinDrawerView)) {
+            pinDrawer.closeDrawer(pinDrawerView);
+        } else {
+            super.onBackPressed();
+        }
+    }
+
     @Override
     protected void onDestroy() {
         super.onDestroy();