Merge pull request #61 from ARMmbed/dev/Patater/psa-fix-ci

Merge #61 into feature-psa
diff --git a/tests/suites/test_suite_pk.function b/tests/suites/test_suite_pk.function
index a1d9b0b..916b3c5 100644
--- a/tests/suites/test_suite_pk.function
+++ b/tests/suites/test_suite_pk.function
@@ -16,6 +16,7 @@
 static int pk_genkey( mbedtls_pk_context *pk, int size )
 {
     ((void) pk);
+    ((void) size);
 
 #if defined(MBEDTLS_RSA_C) && defined(MBEDTLS_GENPRIME)
     if( mbedtls_pk_get_type( pk ) == MBEDTLS_PK_RSA )