Require V8 to be explicitly initialized before an Isolate is created

samples/lineprocessor.cc

Index: samples/lineprocessor.cc
diff --git a/samples/lineprocessor.cc b/samples/lineprocessor.cc
index 9b627f3019c656cab8663308aedd5fe2b64e3b1f..69bfab49ba64dd8f0f9c84792bad9ffe4124ace9 100644
--- a/samples/lineprocessor.cc
+++ b/samples/lineprocessor.cc
@@ -257,6 +257,7 @@ int main(int argc, char* argv[]) {
   v8::V8::InitializeICU();
   v8::Platform* platform = v8::platform::CreateDefaultPlatform();
   v8::V8::InitializePlatform(platform);
+  v8::V8::Initialize();
   int result = RunMain(argc, argv);
   v8::V8::Dispose();
   v8::V8::ShutdownPlatform();