C++: Fix use with GOOGLE_PROTOBUF_NO_STATIC_INITIALIZER
C++: Fix use with GOOGLE_PROTOBUF_NO_STATIC_INITIALIZER

Behavior of define GOOGLE_PROTOBUF_NO_STATIC_INITIALIZER has been
altered between 337a028 and cc8ca5b for C++.

See github issue #2385 for further details.

google/protobuf,google/protobuf,google/protobuf,google/protobuf,Livefyre/protobuf,google/protobuf,google/protobuf,Livefyre/protobuf,Livefyre/protobuf,google/protobuf,google/protobuf,Livefyre/protobuf,google/protobuf,google/protobuf,Livefyre/protobuf,google/protobuf