Rust's TBinaryInputProtocol fails when strict is false

When use `TBinaryInputProtocol::new(..., false)`, any trivial example will fail:

service TestService

Problem is here:

https://github.com/apache/thrift/blob/master/lib/rs/src/protocol/binary.rs#L126

with_capacity() allocates space, but len() of resulting Vec<> is 0.  read_exact() reads 0 bytes and read_byte() below receives first byte of the string which may or may not convert to TMessageType.

Change it to:
let mut name_buf: Vec<u8> = vec![0; name_size];