Introduced entropy_free()
diff --git a/programs/x509/cert_app.c b/programs/x509/cert_app.c
index dedac94..c43e662 100644
--- a/programs/x509/cert_app.c
+++ b/programs/x509/cert_app.c
@@ -449,6 +449,7 @@
     x509_crt_free( &cacert );
     x509_crt_free( &clicert );
     pk_free( &pkey );
+    entropy_free( &entropy );
 
 #if defined(_WIN32)
     printf( "  + Press Enter to exit this program.\n" );
diff --git a/programs/x509/cert_req.c b/programs/x509/cert_req.c
index c6d7dff..dc45f94 100644
--- a/programs/x509/cert_req.c
+++ b/programs/x509/cert_req.c
@@ -329,6 +329,7 @@
 
     x509write_csr_free( &req );
     pk_free( &key );
+    entropy_free( &entropy );
 
 #if defined(_WIN32)
     printf( "  + Press Enter to exit this program.\n" );
diff --git a/programs/x509/cert_write.c b/programs/x509/cert_write.c
index ba00dc3..94dfa1d 100644
--- a/programs/x509/cert_write.c
+++ b/programs/x509/cert_write.c
@@ -650,6 +650,7 @@
     pk_free( &loaded_subject_key );
     pk_free( &loaded_issuer_key );
     mpi_free( &serial );
+    entropy_free( &entropy );
 
 #if defined(_WIN32)
     printf( "  + Press Enter to exit this program.\n" );