Fix issue https://github.com/simdjson/simdjson/issues/1127 (#1224)

fuzz/fuzz_dump_raw_tape.cpp

@@ -13,6 +13,6 @@ extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
     if (error) { return 0; }
 
     NulOStream os;
-    SIMDJSON_UNUSED auto dumpstatus = elem.dump_raw_tape(os);
+    simdjson_unused auto dumpstatus = elem.dump_raw_tape(os);
     return 0;
 }

fuzz/fuzz_parser.cpp

@@ -4,7 +4,7 @@
 #include <string>
 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
   simdjson::dom::parser parser;
-  SIMDJSON_UNUSED simdjson::dom::element elem;
-  SIMDJSON_UNUSED auto error = parser.parse(Data, Size).get(elem);
+  simdjson_unused simdjson::dom::element elem;
+  simdjson_unused auto error = parser.parse(Data, Size).get(elem);
   return 0;
 }