std_sstream.h (basic_istringstream): Adjust initialization.

std_sstream.h (basic_istringstream): Adjust initialization.

2003-03-28  Benjamin Kosnik  <bkoz@redhat.com>

	* include/std/std_sstream.h (basic_istringstream): Adjust
	initialization.
	(basic_ostringstream): Same.
	(basic_stringstream): Same.
	* include/std/std_fstream.h (basic_ifstream): Adjust initialization.
	(basic_ofstream): Same.
	(basic_fstream): Same.
	* include/std/std_ostream.h (basic_ostrem): Add protected ctor
	that does not call init.
	* include/std/std_istream.h (basic_istream): Same.
	(basic_iostream): Construct istream, ostream uninitialized, use
	init to initialize just once. Add protected ctor that does not
	call init.

From-SVN: r64980