[glib] valgrind: Add false positive to suppressions file

[Philip Withnall <pwithnall src gnome org>]

commit a72f57eeabb7857a3476d199dd96e117b6c9afb9
Author: Philip Chimento <philip endlessm com>
Date:   Thu Aug 31 15:16:11 2017 -0700

    valgrind: Add false positive to suppressions file
    
    Valgrind will check that the third argument to ioctl() is a valid
    pointer, but some ioctls interpret that argument as an integer, and that
    is the case here (it's a file descriptor), so this is a false positive.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=787109

 glib.supp |   10 ++++++++++
 1 files changed, 10 insertions(+), 0 deletions(-)
---
diff --git a/glib.supp b/glib.supp
index ccfab67..e3ce6bc 100644
--- a/glib.supp
+++ b/glib.supp
@@ -232,6 +232,16 @@
        fun:_g_io_module_get_default
 }
 
+# memcheck checks that the third argument to ioctl() is a valid pointer, but
+# some ioctls use that argument as an integer
+{
+   ioctl-with-non-pointer-param
+   Memcheck:Param
+   ioctl(generic)
+   fun:ioctl
+   fun:btrfs_reflink_with_progress
+}
+
 {
        g-private-get
        drd:ConflictingAccess