8356020: Failed assert in virtualMemoryTracker.cpp

Reviewed-by: iklam, gziemski

Author: calvinccheung

src/hotspot/share/cds/archiveBuilder.cpp

@@ -313,7 +313,7 @@ address ArchiveBuilder::reserve_buffer() {
   ReservedSpace rs = MemoryReserver::reserve(buffer_size,
                                              MetaspaceShared::core_region_alignment(),
                                              os::vm_page_size(),
-                                             mtClassShared);
+                                             mtNone);
   if (!rs.is_reserved()) {
     log_error(cds)("Failed to reserve %zu bytes of output buffer.", buffer_size);
     MetaspaceShared::unrecoverable_writing_error();