issue-384: don't crash when attempting to convert a void expression
issue-384: don't crash when attempting to convert a void expression

chbfiv/fabric-engine-old,chbfiv/fabric-engine-old,errordeveloper/fe-devel,chbfiv/fabric-engine-old,chbfiv/fabric-engine-old,chbfiv/fabric-engine-old,errordeveloper/fe-devel,chbfiv/fabric-engine-old,errordeveloper/fe-devel,chbfiv/fabric-engine-old,errordeveloper/fe-devel,errordeveloper/fe-devel,errordeveloper/fe-devel,errordeveloper/fe-devel