Suppress a memory leak in libselinux.so/getdelim

tools/valgrind/memcheck/suppressions.txt

 # There are three kinds of suppressions in this file.
 # 1. third party stuff we have no control over
 #
 # 2. intentional unit test errors, or stuff that is somehow a false positive
 # in our own code, or stuff that is so trivial it's not worth fixing
 #
 # 3. Suppressions for real chromium bugs that are not yet fixed.
 # These should all be in chromium's bug tracking system (but a few aren't yet).
 # Periodically we should sweep this file and the bug tracker clean by
 # running overnight and removing outdated bugs/suppressions.
@@ skipping 4608 matching lines @@
 }
 {
    bug_todo_getdelim
    Memcheck:Leak
    fun:malloc
    fun:getdelim
    ...
    fun:call_init
    fun:_dl_init
 }
+{
+   bug_todo_getdelim2
+   Memcheck:Leak
+   fun:malloc
+   fun:getdelim
+   obj:/lib/libselinux.so.1
+   obj:/lib/libselinux.so.1
+   obj:/lib/libselinux.so.1
+}