coverity#1340227 Missing break in switch

Change-Id: I30ea6cea81ae1b4f344e253c7a51cfef4d844128
(cherry picked from commit f4ac7854)
Reviewed-on: https://gerrit.libreoffice.org/20178Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>

sd/source/ui/view/ViewShellBase.cxx

@@ -1290,6 +1290,7 @@ void ViewShellBase::Implementation::GetSlotState (SfxItemSet& rSet)
                         pFrameView = mrBase.GetMainViewShell()->GetFrameView();
                         bState = pFrameView->GetViewShEditMode() == EM_MASTERPAGE
                             && pFrameView->GetPageKind() == PK_NOTES;
+                        break;
 
                     case SID_TOGGLE_TABBAR_VISIBILITY:
                         bState = GetUserWantsTabBar();