Adding stub function to swallow slider grabbing scrolling events

src/ui/results.ui

@@ -343,6 +343,7 @@
                 <property name="round-digits">1</property>
                 <property name="draw-value">False</property>
                 <property name="has-origin">False</property>
+                <signal name="scroll-event" handler="swallow_slider_scroll_event" swapped="no"/>
                 <signal name="value-changed" handler="seek_slider" swapped="no"/>
               </object>
               <packing>