Update libc

libc/src/std/sys/wait.c

@@ -0,0 +1,14 @@
+#include <sys/wait.h>
+
+pid_t wait(int *wstatus)
+{
+    return waitpid(-1, &wstatus, 0);
+}
+
+pid_t waitpid(pid_t pid, int *wstatus, int options)
+{
+}
+
+int waitid(idtype_t idtype, id_t id, siginfo_t *infop, int options)
+{
+}