MSVC: Categorized logging macro causes warning message about scope of variable 'enabled' if function has such a variable

void SomeClass:setDropSiteEnabled(bool enabled)
{
    qCDebug(lcQpaMime) << __FUNCTION__ << window() << enabled;
    if (enabled) {

foo.cpp:984: warning: C4258: 'enabled' : definition from the for loop is ignored; the definition from the enclosing scope is used

#define qCDebug(category, ...) \
    for (bool enabled = category().isDebugEnabled(); Q_UNLIKELY(enabled); enabled = false) \
        QMessageLogger(__FILE__, __LINE__, Q_FUNC_INFO, category().categoryName()).debug(__VA_ARGS__)