clang specific define in Runtime.cc

Signed-off-by: ebensza <bence.janos.szabo@ericsson.com>

core/Runtime.cc

@@ -2895,7 +2895,12 @@ void TTCN_Runtime::wait_terminated_processes()
   errno = 0;
   for ( ; ; ) {
     int statuscode;
+#ifdef __clang__
     struct rusage r_usage = {{0,0},{0,0},{0},{0},{0},{0},{0},{0},{0},{0},{0},{0},{0},{0},{0},{0}};
+#else
+    struct rusage r_usage = {{0,0},{0,0},0,0,0,0,0,0,0,0,0,0,0,0,0,0};
+#endif
+
 #ifdef INTERIX
     pid_t child_pid = waitpid(-1, &statuscode, WNOHANG);
     getrusage(RUSAGE_CHILDREN, &r_usage);