D56910.id.diff
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D56910.id.diff
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	diff --git a/usr.bin/diff/pr.c b/usr.bin/diff/pr.c
	--- a/usr.bin/diff/pr.c
	+++ b/usr.bin/diff/pr.c
	@@ -71,8 +71,9 @@

	posix_spawnattr_setprocdescp_np(&sa, &pr->procd, 0);

	- if (pfd[0] != STDIN_FILENO)
	- posix_spawn_file_actions_adddup2(&fa, pfd[0], STDIN_FILENO);
	+ error = posix_spawn_file_actions_adddup2(&fa, pfd[0], STDIN_FILENO);
	+ if (error != 0)
	+ errc(2, error, "posix_spawn_file_actions_adddup2");

	char argv[] = { __DECONST(char , _PATH_PR),
	__DECONST(char *, "-h"), header, NULL };