Free up 'out' before exiting pkcs12 application.
Submitted by: Wu Zhigang <zhigangwu@yahoo.com>

apps/pkcs12.c

diff --git a/apps/pkcs12.c b/apps/pkcs12.c
index 13544dd..88816c9 100644
--- a/apps/pkcs12.c
+++ b/apps/pkcs12.c
@@ -452,6 +452,7 @@
     PKCS12_free(p12);
     ret = 0;
     end:
+    BIO_free(out);
     EXIT(ret);
 }