src/modbus.c: _modbus_receive_msg(): if "ctx->backend->select" failed, report it as such (not as generic "select()")

Signed-off-by: Jim Klimov <jimklimov+nut@gmail.com>

Author: jimklimov

src/modbus.c

@@ -421,7 +421,7 @@ int _modbus_receive_msg(modbus_t *ctx, uint8_t *msg, msg_type_t msg_type)
     while (length_to_read != 0) {
         rc = ctx->backend->select(ctx, &rset, p_tv, length_to_read);
         if (rc == -1) {
-            _error_print(ctx, "select");
+            _error_print(ctx, "ctx->backend->select");
             if (ctx->error_recovery & MODBUS_ERROR_RECOVERY_LINK) {
 #ifdef _WIN32
                 wsa_err = WSAGetLastError();