Small patch to handle -Wfloat-equal warnings
Small patch to handle -Wfloat-equal warnings

https://groups.google.com/d/msg/protobuf/H8_D1hfg3p4/A2oPHdfUAgAJ
google/protobuf,google/protobuf,google/protobuf,google/protobuf,google/protobuf,google/protobuf,google/protobuf,google/protobuf,google/protobuf,google/protobuf,google/protobuf