removed TODOs

arangod/Aql/Ast.cpp

@@ -1149,7 +1149,7 @@ AstNode* Ast::optimizeUnaryOperatorArithmetic (AstNode* node) {
       // double
       double const value = - converted->getDoubleValue();
       
-      if (value != value || 
+      if (value != value ||  // intentional
           value == HUGE_VAL || 
           value == - HUGE_VAL) {
         // IEEE754 NaN values have an interesting property that we can exploit...

arangod/Aql/Expression.cpp

@@ -610,6 +610,7 @@ AqlValue Expression::executeSimpleExpression (AstNode const* node,
         // right operand must be a list, otherwise we return false
         left.destroy();
         right.destroy();
+        // do not throw, but return "false" instead
         return AqlValue(new triagens::basics::Json(false));
       }