Remove redundant SSL_READING lines after ssl_read_bytes.

These are redundant with the lower level ones in s3_pkt.c just before BIO_read.
Only the operation which actually failed an operation on the BIO should set
the wait state.

Not all failure paths in ssl3_read_bytes and dtls1_read_bytes set SSL_READING,
but those that don't leave the BIO in a retry state, so SSL_READING doesn't
matter.

Change-Id: I2ae064ecc8b2946cc8ae8f724be09dfe49e077b5
Reviewed-on: https://boringssl-review.googlesource.com/4230
Reviewed-by: Adam Langley <agl@google.com>
2 files changed