[app][tests] fix a function definition to make the prototype
Only shows up when trying to link with LTO.
#include <platform.h>
+#include <app/tests.h>
+
#define LOCAL_TRACE 0
void *context1 = (void *) 0x53;
@@ -705,7 +707,7 @@ int group_waiting(void) {
#define RUN_TEST(t) result = t(); if (result) goto fail
-int port_tests(void) {
+int port_tests(int argc, const cmd_args *argv) {
int result;
int count = 3;
while (count--) {
