8358686: CDS and AOT can cause buffer truncation warning even when logging is disabled

Reviewed-by: dnsimon, iklam

Author: Yudi Zheng

src/hotspot/share/cds/metaspaceShared.cpp

@@ -1288,6 +1288,10 @@ void MetaspaceShared::report_loading_error(const char* format, ...) {
   LogStream ls_cds(level, LogTagSetMapping<LOG_TAGS(cds)>::tagset());
 
   LogStream& ls = CDSConfig::new_aot_flags_used() ? ls_aot : ls_cds;
+  if (!ls.is_enabled()) {
+    return;
+  }
+
   va_list ap;
   va_start(ap, format);