ZJIT: Remove redundant snapshot for opt_getconstant_path (ruby#16229)

Author: nozomemein

zjit/src/hir.rs

@@ -6714,9 +6714,7 @@ pub fn iseq_to_hir(iseq: *const rb_iseq_t) -> Result<Function, ParseError> {
                 }
                 YARVINSN_opt_getconstant_path => {
                     let ic = get_arg(pc, 0).as_ptr();
-                    // TODO: Remove this extra Snapshot and pass `exit_id` to `GetConstantPath` instead.
-                    let snapshot = fun.push_insn(block, Insn::Snapshot { state: exit_state });
-                    state.stack_push(fun.push_insn(block, Insn::GetConstantPath { ic, state: snapshot }));
+                    state.stack_push(fun.push_insn(block, Insn::GetConstantPath { ic, state: exit_id }));
                 }
                 YARVINSN_branchunless | YARVINSN_branchunless_without_ints => {
                     if opcode == YARVINSN_branchunless {