[PATCH spice-gtk] RFC: usbredir: fix leaks introduced by lz4 patch

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From: Marc-André Lureau <marcandre.lureau@xxxxxxxxxx>

While reviewing lz4 patch, I found that there are potential leaks. This
is untested, fyi. It would be nice if someone could confirm with running
ASAN for example.

Signed-off-by: Marc-André Lureau <marcandre.lureau@xxxxxxxxxx>
---
 src/channel-usbredir.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/src/channel-usbredir.c b/src/channel-usbredir.c
index 9c71c07..85f16d7 100644
--- a/src/channel-usbredir.c
+++ b/src/channel-usbredir.c
@@ -692,13 +692,13 @@ static int try_write_compress_LZ4(SpiceUsbredirChannel *channel, uint8_t *data,
         spice_marshaller_add_ref_full(msg_out_compressed->marshaller,
                                       compressed_data_msg.compressed_data,
                                       compressed_data_count,
-                                      usbredir_free_write_cb_data,
+                                      (spice_marshaller_item_free_func)g_free,
                                       channel);
         spice_msg_out_send(msg_out_compressed);
         return TRUE;
     }
     /* if not - free & fallback to sending the message uncompressed */
-    free(compressed_buf);
+    g_free(compressed_buf);
     return FALSE;
 }
 #endif
@@ -709,8 +709,10 @@ static int usbredir_write_callback(void *user_data, uint8_t *data, int count)
     SpiceMsgOut *msg_out;
 
 #ifdef USE_LZ4
-    if (try_write_compress_LZ4(channel, data, count))
+    if (try_write_compress_LZ4(channel, data, count)) {
+        usbredirhost_free_write_buffer(channel->priv->host, data);
         return count;
+    }
 #endif
     msg_out = spice_msg_out_new(SPICE_CHANNEL(channel),
                                 SPICE_MSGC_SPICEVMC_DATA);
-- 
2.9.0

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