NAME
	PopChunk -- pop top context node off context stack. (V36)

   SYNOPSIS
	error = PopChunk(iff);
	D0               A0

	LONG PopChunk(struct IFFHandle *);

   FUNCTION
	Pops top context chunk and frees all associated local context items.
	The function is normally called only for writing files and signals
	the end of a chunk.

   INPUTS
	iff - pointer to IFFHandle structure.

   RESULT
	error - 0 if successful or an IFFERR_#? error code if unsuccessful.

   SEE ALSO
	PushChunk(), <libraries/iffparse.h>