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1diff --git a/third_party/libtiff/tif_pixarlog.c b/third_party/libtiff/tif_pixarlog.c
2index 29535d31e..80006d5b1 100644
3--- a/third_party/libtiff/tif_pixarlog.c
4+++ b/third_party/libtiff/tif_pixarlog.c
5@@ -697,6 +697,9 @@ PixarLogSetupDecode(TIFF* tif)
6        if (sp->user_datafmt == PIXARLOGDATAFMT_UNKNOWN)
7                sp->user_datafmt = PixarLogGuessDataFmt(td);
8        if (sp->user_datafmt == PIXARLOGDATAFMT_UNKNOWN) {
9+               _TIFFfree(sp->tbuf);
10+               sp->tbuf = NULL;
11+               sp->tbuf_size = 0;
12                TIFFErrorExt(tif->tif_clientdata, module,
13                        "PixarLog compression can't handle bits depth/data format combination (depth: %d)",
14                        td->td_bitspersample);
15@@ -704,6 +707,9 @@ PixarLogSetupDecode(TIFF* tif)
16        }
17
18        if (inflateInit(&sp->stream) != Z_OK) {
19+               _TIFFfree(sp->tbuf);
20+               sp->tbuf = NULL;
21+               sp->tbuf_size = 0;
22                TIFFErrorExt(tif->tif_clientdata, module, "%s", sp->stream.msg);
23                return (0);
24        } else {
25