fix some missing breaks in switches

Change-Id: I8cc269d9a622b4af090795e40e11205d1190248b
Reviewed-by: David Schulz <david.schulz@qt.io>
Reviewed-by: Eike Ziller <eike.ziller@qt.io>

src/libs/qtcreatorcdbext/symbolgroupvalue.cpp

@@ -1574,6 +1574,7 @@ static KnownType knownClassTypeHelper(const std::string &type,
     case 29:
         if (!type.compare(qPos, 29, "QXmlStreamNotationDeclaration"))
             return KT_QXmlStreamNotationDeclaration;
+        break;
     case 30:
         if (!type.compare(qPos, 30, "QPatternist::SequenceType::Ptr"))
             return KT_QPatternist_SequenceType_Ptr;

src/plugins/debugger/watchdata.cpp

@@ -265,6 +265,7 @@ public:
                     case 8:
                         return decodeArrayHelper<qint64>(encoding.size);
                 }
+                break;
             case DebuggerEncoding::HexEncodedUnsignedInteger:
                 switch (encoding.size) {
                     case 1: