[PATCH] dcc: remove possible dandling pointers

[Frediano Ziglio <fziglio@xxxxxxxxxx>]

Set pointers to NULL after releasing encoders.
This to make sure no further access will occurs.

Signed-off-by: Frediano Ziglio <fziglio@xxxxxxxxxx>
---
 server/dcc-encoders.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/server/dcc-encoders.c b/server/dcc-encoders.c
index 1eaa604..a373412 100644
--- a/server/dcc-encoders.c
+++ b/server/dcc-encoders.c
@@ -409,12 +409,17 @@ void dcc_encoders_init(DisplayChannelClient *dcc)
 void dcc_encoders_free(DisplayChannelClient *dcc)
 {
     quic_destroy(dcc->quic);
+    dcc->quic = NULL;
     lz_destroy(dcc->lz);
+    dcc->lz = NULL;
     jpeg_encoder_destroy(dcc->jpeg);
+    dcc->jpeg = NULL;
 #ifdef USE_LZ4
     lz4_encoder_destroy(dcc->lz4);
+    dcc->lz4 = NULL;
 #endif
     zlib_encoder_destroy(dcc->zlib);
+    dcc->zlib = NULL;
 }
 
 static void marshaller_compress_buf_free(uint8_t *data, void *opaque)
-- 
2.4.3

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