Add suppression for FreeBSD pthread_cond_init()

src/sbbs3/suppressions.vg

@@ -87,6 +87,13 @@
    fun:calloc
    fun:allocate_dtv
 }
+{
+   FreeBSDPthreadCondInit
+   Memcheck:Leak
+   match-leak-kinds: all
+   fun:calloc
+   fun:pthread_cond_init
+}
 {
    FreeBSDPthreadMutexInitNP
    Memcheck:Leak