more future-proofing

Author: Fidget-Spinner

Python/executor_cases.c.h

@@ -234,15 +234,15 @@ def generate_tier2(
         if name_offset_pair := offset_strs.get(name):
             out.emit(f"#define OFFSET_OF_{name_offset_pair[0]} ({name_offset_pair[1]})\n")
         stack = write_uop(uop, emitter, stack)
+        if name_offset_pair:
+            out.emit(f"#undef OFFSET_OF_{name_offset_pair[0]}\n")        
         out.start_line()
         if not uop.properties.always_exits:
             out.emit("break;\n")
         out.start_line()
         out.emit("}")
         out.emit("\n\n")
 
-    for name, offset_str in offset_strs.values():
-        out.emit(f"#undef OFFSET_OF{name}\n")
     out.emit("\n")
     outfile.write("#undef TIER_TWO\n")