* dtable.cc (dtable::dup2): Add some debugging. Use methods from passed in

class rather than cygheap->fdtab.
* fhandler_socket.cc (fhandler_socket::fixup_before_fork_exec): Add more
debugging output.
(fhandler_socket::dup): Allocate new space for prot_info_ptr for duplicated
entry.
* syscalls.cc (stat_worker): Always delete fh if it has been created.

winsup/cygwin/syscalls.cc

@@ -1026,10 +1026,11 @@ stat_worker (const char *name, struct stat *buf, int nofollow, path_conv *pc)
 	  	    pc, (DWORD) real_path);
       memset (buf, 0, sizeof (struct stat));
       res = fh->fstat (buf, pc);
-      delete fh;
     }
 
  done:
+  if (fh)
+    delete fh;
   MALLOC_CHECK;
   syscall_printf ("%d = (%s, %p)", res, name, buf);
   return res;