Don't check that a GVariantBuilder is fully-valid for use when
performing refcounting operations, as these operations may be occuring
after the builder has already been cleared.
#define GVHB_MAGIC ((gsize) 3087242682u)
#define is_valid_builder(b) (b != NULL && \
GVSB(b)->magic == GVSB_MAGIC)
-#define is_valid_heap_builder(b) (GVHB(b)->magic == GVHB_MAGIC && \
- is_valid_builder(b))
+#define is_valid_heap_builder(b) (GVHB(b)->magic == GVHB_MAGIC)
/**
* g_variant_builder_new: