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--- xen-4.17.0/xen/common/bunzip2.c.orig	2022-12-08 18:03:08.000000000 +0000
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+++ xen-4.17.0/xen/common/bunzip2.c	2023-01-17 21:35:39.251292015 +0000
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@@ -223,6 +223,7 @@
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 	for (j = 0; j < groupCount; j++) {
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 		unsigned char length[MAX_SYMBOLS], temp[MAX_HUFCODE_BITS+1];
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 		int	minLen,	maxLen, pp;
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+		length[0]=0;
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 		/* Read Huffman code lengths for each symbol.  They're
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 		   stored in a way similar to mtf; record a starting
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 		   value for the first symbol, and an offset from the