Debugger: CDB: Don't add a task for the wow64 exception.

Task-number: QTCREATORBUG-8886

Change-Id: Idf08562c58e1f02b09ef6ff7a9fb899f1516f9ae
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>

src/plugins/debugger/cdb/cdbengine.cpp

@@ -2410,6 +2410,9 @@ void CdbEngine::handleExtensionMessage(char t, int token, const QByteArray &what
         GdbMi gdbmi;
         gdbmi.fromString(message);
         exception.fromGdbMI(gdbmi);
+        // Don't show the Win32 x86 emulation subsystem breakpoint hit exception.
+        if (exception.exceptionCode == winExceptionWX86Breakpoint)
+            return;
         const QString message = exception.toString(true);
         showStatusMessage(message);
         // Report C++ exception in application output as well.