hurd TIOCFLUSH: fix fixing argument

The argument actually used inside send_rpc is argptr, not arg.

diff --git a/sysdeps/mach/hurd/ioctl.c b/sysdeps/mach/hurd/ioctl.c
index 0d5bc176d10d0954e070e010e8f5329447895d36..ed5de1332f40ee4df9dc69c4f67237d07c71139b 100644 (file)
--- a/sysdeps/mach/hurd/ioctl.c
+++ b/sysdeps/mach/hurd/ioctl.c
@@ -115,8 +115,8 @@ __ioctl (int fd, unsigned long int request, ...)
          void *argptr = arg;
          int zero = 0;
 
-         if (request == TIOCFLUSH && !arg)
-           arg = &zero;
+         if (request == TIOCFLUSH && !argptr)
+           argptr = &zero;
 
          /* Pack an argument into the message buffer.  */
          void in (unsigned int count, enum __ioctl_datum type)