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-rw-r--r--generic/tkImgGIF.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/generic/tkImgGIF.c b/generic/tkImgGIF.c
index 594ec1e..f0ac047 100644
--- a/generic/tkImgGIF.c
+++ b/generic/tkImgGIF.c
@@ -1067,7 +1067,12 @@ DoExtension(
switch (label) {
case 0x01: /* Plain Text Extension */
- /* this extension is ignored, skip below */
+ /*
+ * This extension starts a new scope, so Graphic control Extension
+ * data should be cleared
+ */
+ *transparent = -1;
+ /* this extension is ignored, skip below */
break;
case 0xf9: /* Graphic Control Extension */
count = GetDataBlock(gifConfPtr, chan, buf);