Don't return SSL_ERROR_SYSCALL for EOF

Author: WillChilds-Klein

ssl/ssl_lib.cc

@@ -1369,14 +1369,8 @@ int SSL_get_error(const SSL *ssl, int ret_code) {
     return SSL_ERROR_SSL;
   }
 
-  if (ret_code == 0) {
-    if (ssl->s3->rwstate == SSL_ERROR_ZERO_RETURN) {
-      return SSL_ERROR_ZERO_RETURN;
-    }
-    // An EOF was observed which violates the protocol, and the underlying
-    // transport does not participate in the error queue. Bubble up to the
-    // caller.
-    return SSL_ERROR_SYSCALL;
+  if (ret_code == 0 && ssl->s3->rwstate == SSL_ERROR_ZERO_RETURN) {
+    return SSL_ERROR_ZERO_RETURN;
   }
 
   switch (ssl->s3->rwstate) {