fix channel item display layout

retroshare-gui/src/gui/feeds/GxsChannelPostItem.ui

@@ -551,6 +551,19 @@
      </layout>
     </widget>
    </item>
+   <item row="1" column="0">
+    <spacer name="verticalSpacer">
+     <property name="orientation">
+      <enum>Qt::Vertical</enum>
+     </property>
+     <property name="sizeHint" stdset="0">
+      <size>
+       <width>20</width>
+       <height>0</height>
+      </size>
+     </property>
+    </spacer>
+   </item>
   </layout>
  </widget>
  <customwidgets>