Remove wpend_ret that was only assigned and never used.

Reviewed-by: Neil Horman <nhorman@openssl.org>
Reviewed-by: Hugo Landau <hlandau@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from #23191)

ssl/record/rec_layer_s3.c

@@ -32,7 +32,6 @@ void RECORD_LAYER_clear(RECORD_LAYER *rl)
     rl->handshake_fragment_len = 0;
     rl->wpend_tot = 0;
     rl->wpend_type = 0;
-    rl->wpend_ret = 0;
     rl->wpend_buf = NULL;
 
     if (rl->rrlmethod != NULL)
@@ -310,7 +309,6 @@ int ssl3_write_bytes(SSL *ssl, uint8_t type, const void *buf_, size_t len,
         s->rlayer.wpend_tot = 0;
         s->rlayer.wpend_type = type;
         s->rlayer.wpend_buf = buf;
-        s->rlayer.wpend_ret = len;
     }
 
     if (tot == len) {           /* done? */

ssl/record/record.h

@@ -108,8 +108,6 @@ typedef struct record_layer_st {
     /* number bytes written */
     size_t wpend_tot;
     uint8_t wpend_type;
-    /* number of bytes submitted */
-    size_t wpend_ret;
     const unsigned char *wpend_buf;
 
     /* Count of the number of consecutive warning alerts received */