Fix details in message formatting.

src/isolate.cc

Index: src/isolate.cc
diff --git a/src/isolate.cc b/src/isolate.cc
index eec5a54d737e902caddfcfe5679dcb33656c8dd1..98b3c3acbd662deecea62779f7ad3e4a131d616d 100644
--- a/src/isolate.cc
+++ b/src/isolate.cc
@@ -1231,7 +1231,7 @@ void Isolate::DoThrow(Object* exception, MessageLocation* location) {
       // Stringify custom error objects for the message object.
       if (exception_handle->IsJSObject() && !IsErrorObject(exception_handle)) {
         bool failed = false;
-        exception_handle = Execution::ToString(exception_handle, &failed);
+        exception_handle = Execution::ToDetailString(exception_handle, &failed);
         if (failed) {
           exception_handle = factory()->LookupAsciiSymbol("exception");
         }