Use -r option when invoking rsa-encrypt. Needed for the test to work

on systems with no /dev/urandom.

Rev: src/nettle/examples/rsa-encrypt-test:1.2

examples/rsa-encrypt-test

@@ -7,7 +7,7 @@ fi
 data="$srcdir/nettle-benchmark.c"
 
 if [ -x rsa-encrypt ] ; then
-  if ./rsa-encrypt testkey.pub < "$data" > testciphertext ; then
+  if ./rsa-encrypt -r rsa-encrypt testkey.pub < "$data" > testciphertext ; then
     :
   else
     exit 1