[PATCH 6/7] xz: move s->lzma.len = 0 initialization to lzma_reset()

[Jan Beulich]

From: Lasse Collin <lasse.col...@tukaani.org>

It's a more logical place even if the resetting needs to be done
only once per LZMA2 stream (if lzma_reset() called in the middle
of an LZMA2 stream, .len will already be 0).

Link: https://lore.kernel.org/r/20211010213145.17462-4-xi...@kernel.org
Signed-off-by: Lasse Collin <lasse.col...@tukaani.org>
[Linux commit: a98a25408b0e9b0264abcc3dabfafd9ff2ea1046]
Signed-off-by: Jan Beulich <jbeul...@suse.com>

--- a/xen/common/xz/dec_lzma2.c
+++ b/xen/common/xz/dec_lzma2.c
@@ -791,6 +791,7 @@ static void __init lzma_reset(struct xz_
        s->lzma.rep1 = 0;
        s->lzma.rep2 = 0;
        s->lzma.rep3 = 0;
+       s->lzma.len = 0;
 
        /*
         * All probabilities are initialized to the same value. This hack
@@ -1174,8 +1175,6 @@ XZ_EXTERN enum xz_ret __init xz_dec_lzma
                }
        }
 
-       s->lzma.len = 0;
-
        s->lzma2.sequence = SEQ_CONTROL;
        s->lzma2.need_dict_reset = true;