fix no-return function call in cipher.c from commit
Reported-by: buildfarm member sifaka
Backpatch-through: master
#include "common/cipher.h"
-static void cipher_failure(void);
+static void cipher_failure(void) pg_attribute_noreturn();
PgCipherCtx *
pg_cipher_ctx_create(int cipher, uint8 *key, int klen, bool enc)
