tests: Use inline function for dummy definition of test_randomize.

ChangeLog

@@ -5,6 +5,8 @@
 	* testsuite/ecdsa-keygen-test.c (ecc_valid_p): ... old copy.
 	* testsuite/gostdsa-keygen-test.c (ecc_valid_p): ... old copy.
 	* testsuite/testutils.h: Declare it.
+	(test_randomize) [NETTLE_USE_MINI_GMP]: Use inline function rather
+	than macro for dummy definition, to avoid compile time warnings.
 
 2022-01-10  Niels Möller  <nisse@lysator.liu.se>
 

testsuite/testutils.h

@@ -163,7 +163,8 @@ void gmp_randinit_default (struct knuth_lfib_ctx *ctx);
 void mpz_urandomb (mpz_t r, struct knuth_lfib_ctx *ctx, mp_bitcnt_t bits);
 /* This is cheating */
 #define mpz_rrandomb mpz_urandomb
-#define test_randomize(rands) 0
+static inline int
+test_randomize (gmp_randstate_t rands UNUSED) { return 0; }
 #else /* !NETTLE_USE_MINI_GMP */
 int
 test_randomize (gmp_randstate_t rands);