Only free if it ain't NULL.

CHANGES

diff --git a/CHANGES b/CHANGES
index 3606450..b2e31d6 100644
--- a/CHANGES
+++ b/CHANGES
@@ -5,6 +5,9 @@
 
  Changes between 0.9.1c and 0.9.2
 
+  *) rsa_eay.c would attempt to free a NULL context.
+     [Arne Ansper <arne@ats.cyber.ee>]
+
   *) BIO_s_socket() had a broken should_retry() on Windoze.
      [Arne Ansper <arne@ats.cyber.ee>]