Introduced entropy_free()
diff --git a/programs/pkey/dh_genprime.c b/programs/pkey/dh_genprime.c
index f773f1e..2089fb6 100644
--- a/programs/pkey/dh_genprime.c
+++ b/programs/pkey/dh_genprime.c
@@ -143,6 +143,7 @@
 exit:
 
     mpi_free( &G ); mpi_free( &P ); mpi_free( &Q );
+    entropy_free( &entropy );
 
 #if defined(_WIN32)
     printf( "  Press Enter to exit this program.\n" );