[Toybox] [PATCH] xputsl: fix the *other* line in this function :-)

[enh]

Some of the grep tests were still failing because we weren't flushing
stdout --- xflush takes a bool that says whether to actually flush, so
we need to pass 1, not 0.
---
 lib/xwrap.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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