[evolution-data-server] IMAPx: Correct ref/unref imbalance on a GConverter in/out base streams

[Milan Crha <mcrha src gnome org>]

commit 5e6569908638e9523d495d78dc3aa24ee96d5cad
Author: Milan Crha <mcrha redhat com>
Date:   Thu Jul 2 13:53:03 2020 +0200

    IMAPx: Correct ref/unref imbalance on a GConverter in/out base streams
    
    Both g_converter_input_stream_new() and g_converter_output_stream_new()
    add its own reference on the base stream, thus the one used by the argument
    should be removed, to avoid leak of the memory.

 src/camel/providers/imapx/camel-imapx-server.c | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)
---
diff --git a/src/camel/providers/imapx/camel-imapx-server.c b/src/camel/providers/imapx/camel-imapx-server.c
index 816c6e66e..7cbf5db82 100644
--- a/src/camel/providers/imapx/camel-imapx-server.c
+++ b/src/camel/providers/imapx/camel-imapx-server.c
@@ -2647,10 +2647,12 @@ imapx_server_set_streams (CamelIMAPXServer *is,
 
                /* The logger produces debugging output. */
                logger = camel_imapx_logger_new (is->priv->tagprefix);
-               input_stream = g_converter_input_stream_new (
-                       input_stream, logger);
+               temp_stream = g_converter_input_stream_new (input_stream, logger);
+               g_object_unref (input_stream);
                g_clear_object (&logger);
 
+               input_stream = temp_stream;
+
                /* Buffer the input stream for parsing. */
                temp_stream = camel_imapx_input_stream_new (input_stream);
                camel_binding_bind_property (
@@ -2662,11 +2664,15 @@ imapx_server_set_streams (CamelIMAPXServer *is,
        }
 
        if (output_stream != NULL) {
+               GOutputStream *temp_stream;
+
                /* The logger produces debugging output. */
                logger = camel_imapx_logger_new (is->priv->tagprefix);
-               output_stream = g_converter_output_stream_new (
-                       output_stream, logger);
+               temp_stream = g_converter_output_stream_new (output_stream, logger);
+               g_object_unref (output_stream);
                g_clear_object (&logger);
+
+               output_stream = temp_stream;
        }
 
        g_mutex_lock (&is->priv->stream_lock);