- Fix for issue 25950 (add registration of a thread exit callback)

runtime/lib/math.cc

Index: runtime/lib/math.cc
diff --git a/runtime/lib/math.cc b/runtime/lib/math.cc
index d38347197723954144fb5b077a4697fa9c81fb53..8e5e750cd1fc6440760fcb697391a55a71366b31 100644
--- a/runtime/lib/math.cc
+++ b/runtime/lib/math.cc
@@ -205,7 +205,7 @@ DEFINE_NATIVE_ENTRY(SecureRandom_getBytes, 1) {
   const intptr_t n = count.Value();
   ASSERT((n > 0) && (n <= 8));
   uint8_t buffer[8];
-  Dart_EntropySource entropy_source = isolate->entropy_source_callback();
+  Dart_EntropySource entropy_source = Dart::entropy_source_callback();
   if ((entropy_source == NULL) || !entropy_source(buffer, n)) {
     const String& error = String::Handle(String::New(
         "No source of cryptographically secure random numbers available."));