curve: simplify curve25519_proto_init and others

Simplify the function curve25519_proto_init() and also have minor
cleanups in other related ones.

Signed-off-by: Daniel Borkmann <dborkman@redhat.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/xmalloc.h b/xmalloc.h
index e1e4f8f..952b827 100644
--- a/xmalloc.h
+++ b/xmalloc.h
@@ -24,6 +24,12 @@ static inline void __xfree(void *ptr)
         free(ptr);
 }
 
+#define xzfree(ptr, size)	\
+do {				\
+	xmemset(ptr, 0, size);	\
+	xfree(ptr);		\
+} while (0)
+
 #define xfree(ptr)	\
 do {			\
 	__xfree(ptr);	\