[Refactoring] Move fill operation to StructLiteralExp
[Refactoring] Remove StructLiteralExp::ctorinit
[Refactoring] Remove local variable hasHidden
fix Issue 11269 - Union initialization on 64-bit platforms
Merge pull request #2681 from 9rnsr/fix11269

[REG2.064a] Issue 11269 - Union initialization on 64-bit platforms