am b78c76f8: GC Card marking fix for SPUT_OBJECT - use correct object head

Merge commit 'b78c76f88ea42e7a3b295c210ca9ee86e7290043' into gingerbread-plus-aosp

* commit 'b78c76f88ea42e7a3b295c210ca9ee86e7290043':
  GC Card marking fix for SPUT_OBJECT - use correct object head