hg: jdk/sandbox: return on flush if no recoring running + more exact lookups for symbols

[markus.gronlund at oracle.com]

Changeset: c16b748a224e
Author:    mgronlun
Date:      2019-09-16 19:48 +0200
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/c16b748a224e

return on flush if no recoring running + more exact lookups for symbols

! src/hotspot/share/jfr/recorder/checkpoint/types/jfrTypeSetUtils.cpp
! src/hotspot/share/jfr/recorder/checkpoint/types/jfrTypeSetUtils.hpp
! src/hotspot/share/jfr/recorder/repository/jfrRepository.cpp