[libxml2] Use random seed in xmlDictComputeFastKey

[Nick Wellnhofer <nwellnhof src gnome org>]

commit 3c8a3e9922cb1203ab5998ec542ce1e4c7fd085a
Author: Ranier Vilela <ranier_gyn hotmail com>
Date:   Thu Nov 7 12:59:10 2019 +0000

    Use random seed in xmlDictComputeFastKey
    
    xmlDictComputeFastKey is only used for small tables, so this shouldn't
    be a security problem.

 dict.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/dict.c b/dict.c
index 336e046a..26ce516d 100644
--- a/dict.c
+++ b/dict.c
@@ -452,7 +452,7 @@ xmlDictComputeFastKey(const xmlChar *name, int namelen, int seed) {
     unsigned long value = seed;
 
     if (name == NULL) return(0);
-    value = *name;
+    value += *name;
     value <<= 5;
     if (namelen > 10) {
         value += name[namelen - 1];