Switch to current upstream OpenBSD fwrite.c.

Change-Id: Ife527aafc1e5438f477d711902efe6e6f59f3f8e
diff --git a/libc/Android.mk b/libc/Android.mk
index ff21d6a..9b71f6a 100644
--- a/libc/Android.mk
+++ b/libc/Android.mk
@@ -223,7 +223,6 @@
     upstream-freebsd/lib/libc/stdio/fclose.c \
     upstream-freebsd/lib/libc/stdio/flags.c \
     upstream-freebsd/lib/libc/stdio/fopen.c \
-    upstream-freebsd/lib/libc/stdio/fwrite.c \
     upstream-freebsd/lib/libc/stdio/makebuf.c \
     upstream-freebsd/lib/libc/stdio/mktemp.c \
     upstream-freebsd/lib/libc/stdio/setvbuf.c \
@@ -388,6 +387,7 @@
     upstream-openbsd/lib/libc/stdio/fwalk.c \
     upstream-openbsd/lib/libc/stdio/fwide.c \
     upstream-openbsd/lib/libc/stdio/fwprintf.c \
+    upstream-openbsd/lib/libc/stdio/fwrite.c \
     upstream-openbsd/lib/libc/stdio/fwscanf.c \
     upstream-openbsd/lib/libc/stdio/getc.c \
     upstream-openbsd/lib/libc/stdio/getchar.c \