[glib-networking] Revert "Account for ongoing ops in check function"

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 3d777801496fd7ad8525f33fd1451bf7fc51cbde
Author: Michael Catanzaro <mcatanzaro gnome org>
Date:   Fri Sep 4 14:18:06 2020 -0500

    Revert "Account for ongoing ops in check function"
    
    This reverts commit 4a1aeda4d8dff96a8a9037d4639aa7b96c87f927.

 tls/base/gtlsconnection-base.c | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)
---
diff --git a/tls/base/gtlsconnection-base.c b/tls/base/gtlsconnection-base.c
index 7001104e..97ac24fa 100644
--- a/tls/base/gtlsconnection-base.c
+++ b/tls/base/gtlsconnection-base.c
@@ -907,12 +907,14 @@ g_tls_connection_base_check (GTlsConnectionBase  *tls,
   if (priv->need_finish_handshake)
     return TRUE;
 
-  /* If op or close is in progress, then tls_istream and tls_ostream are
-   * blocked, regardless of the base stream status. Note this also
-   * accounts for handshake ops.
+  /* If a handshake or close is in progress, then tls_istream and
+   * tls_ostream are blocked, regardless of the base stream status.
    */
-  if (((condition & G_IO_IN) && (priv->reading || priv->read_closing)) ||
-      ((condition & G_IO_OUT) && (priv->writing || priv->write_closing)))
+  if (priv->handshaking)
+    return FALSE;
+
+  if (((condition & G_IO_IN) && priv->read_closing) ||
+      ((condition & G_IO_OUT) && priv->write_closing))
     return FALSE;
 
   /* Defer to the base stream or GDatagramBased. */