An egcs patch for libio

[hjl@lucon.org (H.J. Lu)]

This patch is needed for glibc 2. BTW, libio in egcs is not compatible
with libio in glibc 2.1. I have patches for both glibc 2.1 and egcs.
But they have to go tegether.

FYI, the _lock field in _IO_stdin/_IO_stdout/_IO_stderr is not
newed. It is a static variable.

-- 
H.J. Lu (hjl@gnu.org)
----  
Wed Dec  3 10:49:39 1997  H.J. Lu  (hjl@gnu.org)

	* streambuf.cc (streambuf::~streambuf): Don't delete _lock
	for _IO_stdin/_IO_stdout/_IO_stderr.

Index: streambuf.cc
===================================================================
RCS file: /home/work/cvs/gnu/egcs/libio/streambuf.cc,v
retrieving revision 1.1.1.3
diff -u -r1.1.1.3 streambuf.cc
--- streambuf.cc	1997/09/17 20:12:35	1.1.1.3
+++ streambuf.cc	1997/12/03 18:46:48
@@ -220,7 +220,8 @@
 {
   _IO_default_finish(this,0);
 #ifdef _IO_MTSAFE_IO
-  delete _lock;
+  if (this != _IO_stdin && this != _IO_stdout && this != _IO_stderr)
+    delete _lock;
 #endif
 }