Fix ASM frame crash in short-circuit ops and deref

[fglock]

Fixes an ASM frame computation crash (ArrayIndexOutOfBoundsException) triggered by non-local control flow during RHS evaluation of short-circuit ops / deref expressions.

Changes:

• Spill LHS/result when emitting short-circuit logical operators to keep operand stack consistent across control-flow.
• Spill deref base values to locals before evaluating subscript expressions.

Repro:

• ./jperl examples/life_bitpacked.pl 200 200 50

Result:

• Script runs to completion.