Update header versions for NDK platform fixes.
Bug: http://b/28178111
Change-Id: Icd638673b409aa43a91490f77c6b4d79c9ea20d9
diff --git a/libc/include/sys/wait.h b/libc/include/sys/wait.h
index aba20e5..e0afabc 100644
--- a/libc/include/sys/wait.h
+++ b/libc/include/sys/wait.h
@@ -51,7 +51,7 @@
extern pid_t wait(int *);
extern pid_t waitpid(pid_t, int *, int);
-extern pid_t wait4(pid_t, int*, int, struct rusage*) __INTRODUCED_IN(19);
+extern pid_t wait4(pid_t, int*, int, struct rusage*) __INTRODUCED_IN(18);
/* Posix states that idtype_t should be an enumeration type, but
* the kernel headers define P_ALL, P_PID and P_PGID as constant macros