Fix bug in code generation when data is managed in original code.

Author: isazi

kernel_tuner/utils/directives.py

@@ -478,12 +478,16 @@ def generate_directive_function(
         body = start_timing_cxx(body)
         if data is not None:
             code += wrap_data(body + "\n", langs, data, preprocessor, user_dimensions)
+        else:
+            code += body
         code = end_timing_cxx(code)
         code += "\n}"
     elif is_fortran(langs.language):
         body = wrap_timing(body, langs.language)
         if data is not None:
             code += wrap_data(body + "\n", langs, data, preprocessor, user_dimensions)
+        else:
+            code += body
         name = signature.split(" ")[1].split("(")[0]
         code += f"\nend function {name}\nend module kt\n"