Fix -Wimplicit-fallthrough for clang

Clang's `-Wimplicit-fallthrough` warnings are a little stricter than
gcc's interpretation:

switch (i) {
case 0:
    foo();
case 4:
    break;
}

While gcc accepts the implicit fallthrough, if the following statement
is a trivial `break`, clang will warn about it.

Pick-to: 6.7
Change-Id: I38e0817f1bc034fbb552aeac21de1516edcbcbb0
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>

1 files changed, 2 insertions, 0 deletions

diff --git a/src/widgets/accessible/itemviews.cpp b/src/widgets/accessible/itemviews.cpp
index b960cd70e2..aa5f729820 100644
--- a/src/widgets/accessible/itemviews.cpp
+++ b/src/widgets/accessible/itemviews.cpp
@@ -352,6 +352,7 @@ bool QAccessibleTable::unselectRow(int row)
             //the ones which are down the current row will be deselected
             selection = QItemSelection(index, theModel->index(rowCount() - 1, 0, rootIndex));
         }
+        break;
     default:
         break;
     }
@@ -392,6 +393,7 @@ bool QAccessibleTable::unselectColumn(int column)
             //of the current rown, the ones which are at the right will be deselected
             selection = QItemSelection(index, theModel->index(0, columnCount() - 1, rootIndex));
         }
+        break;
     default:
         break;
     }