On 32 bit systems, setting the certificate lifetime to 28 years overflows time_t.

Debugging and patch by Julien Cristau.

--- a/test/ssl/newsite.sh
+++ b/test/ssl/newsite.sh
@@ -12,7 +12,7 @@ test -f "$1/ca.key" || {
   exit 1
 }
 
-days=10240
+days=1024
 
 . ./lib.sh
 
