Fix incorrect result for the !in operator

fixes #7806

diff --git a/lib/config/expression.cpp b/lib/config/expression.cpp
index c058789f2e3657e81f5dd258f176aad4fe8f99c3..8d1e36c899150093e8e92ee2ace953f8b58c0e50 100644 (file)
--- a/lib/config/expression.cpp
+++ b/lib/config/expression.cpp
@@ -192,7 +192,7 @@ Value NotInExpression::DoEvaluate(VMFrame& frame, DebugHint *dhint) const
        Value right = m_Operand2->Evaluate(frame);
 
        if (right.IsEmpty())
-               return false;
+               return true;
        else if (!right.IsObjectType<Array>())
                BOOST_THROW_EXCEPTION(ConfigError("Invalid right side argument for 'in' operator: " + JsonEncode(right)));