* go32-nat.c: (go32_wait): If child_cwd[] is empty, initialize

	* go32-nat.c: (go32_wait): If child_cwd[] is empty, initialize
	it to GDB's current directory.
	(go32_create_inferior, init_go32_ops): Initialize child_cwd[] to
	an empty string, to signal an uninitialized value.
	From Robert Hoehne <robert.hoehne@gmx.net>.