Fixed leaked global symbols

	---
	 gc.c            | 14 +++++++++-----
	 vm_insnhelper.c |  7 ++++---
	 vm_insnhelper.h |  2 +-
	 vm_sync.c       |  4 ++--
	 vm_sync.h       |  6 ++++--
	 5 files changed, 20 insertions(+), 13 deletions(-)