Various clang-tidy improvements (#37237)

Author: DaanDeMeyer

meson.build

@@ -37,9 +37,11 @@ if conf.get('ENABLE_UKIFY') == 1
                 capture : true,
                 build_by_default : want_tests != 'false')
 else
-        test_hwids_section_c = ''
+        test_hwids_section_c = []
 endif
 
+generated_sources += test_hwids_section_c
+
 executables += [
         efi_test_template + {
                 'sources' : files('test-bcd.c'),