Fix unused parameters warnings when MBEDTLS_CIPHER_PADDING_PKCS7 is disabled

Signed-off-by: Waleed Elmelegy <waleed.elmelegy@arm.com>
diff --git a/tests/suites/test_suite_pkcs5.function b/tests/suites/test_suite_pkcs5.function
index da29a1b..f675f66 100644
--- a/tests/suites/test_suite_pkcs5.function
+++ b/tests/suites/test_suite_pkcs5.function
@@ -45,8 +45,9 @@
     size_t my_out_len = 0;
 #endif
 
-    /* This parameter is only used when MBEDTLS_CIPHER_PADDING_PKCS7 is enabled */
+    /* Those parameters are only used when MBEDTLS_CIPHER_PADDING_PKCS7 is enabled */
     (void) ref_out_len;
+    (void) outsize;
 
     params.tag = params_tag;
     params.p = params_hex->x;
@@ -92,8 +93,9 @@
     size_t my_out_len = 0;
 #endif
 
-    /* This parameter is only used when MBEDTLS_CIPHER_PADDING_PKCS7 is enabled */
+    /* Those parameters are only used when MBEDTLS_CIPHER_PADDING_PKCS7 is enabled */
     (void) ref_out_len;
+    (void) outsize;
 
 
     params.tag = params_tag;