Get rid of spurious warnings

Author: Fidget-Spinner

Lib/test/test_generated_cases.py

@@ -2541,6 +2541,8 @@ def test_replace_opcode_binop_one_output_insert(self):
                 l_stackref = left;
                 r_stackref = right;
                 /* End of uop copied from bytecodes for constant evaluation */
+                (void)l_stackref;
+                (void)r_stackref;
                 res = sym_new_const_steal(ctx, PyStackRef_AsPyObjectSteal(res_stackref));
                 CHECK_STACK_BOUNDS(1);
                 stack_pointer[-2] = res;

Python/optimizer_cases.c.h

@@ -227,6 +227,9 @@ def replace_opcode_if_evaluates_pure(
         emitter.emit_tokens(self.original_uop, storage, inst=None, emit_braces=False)
         self.out.start_line()
         emitter.emit("/* End of uop copied from bytecodes for constant evaluation */\n")
+        for outp in self.original_uop.stack.outputs:
+            if not outp.name == output_identifier.text:
+                emitter.emit(f"(void){outp.name}_stackref;\n")
 
         # Output stackref is created from new reference.
         emitter.emit(f"{output_identifier.text} = sym_new_const_steal(ctx, PyStackRef_AsPyObjectSteal({output_identifier.text}_stackref));\n")