Resize Code Explrorer Icon

Keep the clear icon within the search bar boundaries.

Author: IvenBach

Rubberduck.Core/UI/CodeExplorer/CodeExplorerControl.xaml

@@ -598,7 +598,7 @@
 
                 <Button Style="{StaticResource XButtonStyle}" 
                         HorizontalAlignment="Right" VerticalAlignment="Center" 
-                        Height="18" Width="18" Margin="0,1,1,0" 
+                        Height="16" Width="16" Margin="0,1,1,0" 
                         IsEnabled="{Binding CanSearch}"
                         Visibility="{Binding ElementName=SearchBox, Path=Text.Length, Converter={StaticResource StringHasNoValueToVisibility}}" 
                         Click="ButtonBase_OnClick" />