Change return value of ObjectStore::PreallocateObjects to return the error object or null instead o…

runtime/vm/dart.cc

Index: runtime/vm/dart.cc
diff --git a/runtime/vm/dart.cc b/runtime/vm/dart.cc
index e3ba4a46f6ff3adf3618b0039a9c026caddafe04..895d6b192b5e6fa137818d574c2d3db8b8532fe7 100644
--- a/runtime/vm/dart.cc
+++ b/runtime/vm/dart.cc
@@ -464,8 +464,9 @@ RawError* Dart::InitializeIsolate(const uint8_t* snapshot_buffer, void* data) {
   I->set_ic_miss_code(miss_code);
 
   if (snapshot_buffer == NULL) {
-    if (!I->object_store()->PreallocateObjects()) {
-      return T->sticky_error();
+    const Error& error = Error::Handle(I->object_store()->PreallocateObjects());
+    if (!error.IsNull()) {
+      return error.raw();
     }
   }