panic by if_reset with explicit clock and no reset

[clkbug]

This code makes the veryl compiler panic.

module ModuleA #() (
    i_clk: input clock,
    i_rst: input reset,
) {
    always_ff (i_clk) {
        if_reset {}
    }
}

The backtrace is here:

thread 'main' panicked at crates/emitter/src/emitter.rs:1927:54:
called Option::unwrap() on a None value
stack backtrace:
0: rust_begin_unwind
1: core::panicking::panic_fmt
2: core::panicking::panic
3: core::option::unwrap_failed
4: <veryl_emitter::emitter::Emitter as veryl_parser::veryl_walker::VerylWalker>::if_reset_statement
5: veryl_emitter::emitter::Emitter::emit_statement_block
6: <veryl_emitter::emitter::Emitter as veryl_parser::veryl_walker::VerylWalker>::always_ff_declaration
7: <veryl_emitter::emitter::Emitter as veryl_parser::veryl_walker::VerylWalker>::module_group
8: <veryl_emitter::emitter::Emitter as veryl_parser::veryl_walker::VerylWalker>::module_declaration
9: <veryl_emitter::emitter::Emitter as veryl_parser::veryl_walker::VerylWalker>::description_group
10: <veryl_emitter::emitter::Emitter as veryl_parser::veryl_walker::VerylWalker>::veryl
11: veryl_emitter::emitter::Emitter::emit
12: veryl::cmd_build::CmdBuild::exec
13: veryl::main

I have confirmed this with Veryl version 0.13.3 and the online playground.