ProjectExplorer: Add missing breaks to switch in Abi class

Change-Id: I6c855d221e7a4d81f7338bc119c7ecff815e7ea6
Reviewed-by: Tim Jenssen <tim.jenssen@qt.io>

src/plugins/projectexplorer/abi.cpp

@@ -348,9 +348,11 @@ Abi::Abi(const Architecture &a, const OS &o,
     case Abi::VxWorks:
         if (m_osFlavor != VxWorksFlavor)
             m_osFlavor = VxWorksFlavor;
+        break;
     case Abi::QnxOS:
         if (m_osFlavor != GenericQnxFlavor)
             m_osFlavor = UnknownFlavor;
+        break;
     }
 }