"Deiceolate" Thread classes.

src/api.cc

Index: src/api.cc
diff --git a/src/api.cc b/src/api.cc
index 91e4618841ac8adf176259f3cf2ef89ed9a986c1..ec1cb6f9c3d4de9bcdd488226dfd5aded3e5b0d3 100644
--- a/src/api.cc
+++ b/src/api.cc
@@ -4902,9 +4902,10 @@ void V8::TerminateExecution(Isolate* isolate) {
 }
 
 
-bool V8::IsExecutionTerminating() {
-  i::Isolate* isolate = i::Isolate::Current();
-  return IsExecutionTerminatingCheck(isolate);
+bool V8::IsExecutionTerminating(Isolate* isolate) {
+  i::Isolate* i_isolate = isolate != NULL ?
+      reinterpret_cast<i::Isolate*>(isolate) : i::Isolate::Current();
+  return IsExecutionTerminatingCheck(i_isolate);
 }