Allow labelled begin blocks to contain processes in VHDL target
Allow labelled begin blocks to contain processes in VHDL target

This is a simple fix for a crash that occured when a process
was inside a labelled begin inside a generate statement.

themperek/iverilog,CastMi/iverilog,themperek/iverilog,CastMi/iverilog,themperek/iverilog,CastMi/iverilog