msvcrt: fill in _chsize, _dup, _dup2

[JustFillBug]

Update to have _dup2 return whatever described in MS document.


Index: file.c
===================================================================
RCS file: /home/wine/wine/dlls/msvcrt/file.c,v
retrieving revision 1.71
diff -u -r1.71 file.c
--- file.c	8 Sep 2004 01:37:24 -0000	1.71
+++ file.c	15 Sep 2004 07:00:23 -0000
@@ -494,8 +494,7 @@
  */
 int _chsize(int fd, long size)
 {
-    FIXME("(fd=%d, size=%ld): stub\n", fd, size);
-    return -1;
+  return ftruncate(fd, size);
 }
 
 /*********************************************************************
@@ -503,8 +502,7 @@
  */
 int _dup(int od)
 {
-    FIXME("(od=%d): stub\n", od);
-    return -1;
+  return dup(od);
 }
 
 /*********************************************************************
@@ -512,8 +510,11 @@
  */
 int _dup2(int od, int nd)
 {
-    FIXME("(od=%d, nd=%d): stub\n", od, nd);
-    return -1;
+  int retval;
+  retval = dup2(od, nd);
+  if (retval != -1)
+      retval = 0;
+  return retval;
 }
 
 /*********************************************************************