Avoid depending on inlining behavior

tools/valgrind/starpu.suppr

@@ -29,8 +29,7 @@
 {
    known race, but not problematic in practice, see comment in _starpu_tag_clear
    Helgrind:LockOrder
-   fun:pthread_spin_lock
-   fun:_starpu_spin_lock
+   ...
    fun:_starpu_tag_free
    fun:_starpu_htbl_clear_tags
    ...