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plan9: waitpid()

--- a/frontend/main.c

+++ b/frontend/main.c

@@ -194,6 +194,8 @@

 void

 main(int argc, char **argv)

 {

+	int n;

+

 	ARGBEGIN{

 	default:

 		usage();

@@ -202,5 +204,9 @@

 	Binit(&stdin, 0, OREAD);

 	Binit(&stdout, 1, OWRITE);

-	exits(decode() == 0 ? nil : "failed");

+	n = decode();

+	Bterm(&stdout);

+	waitpid();

+

+	exits(n == 0 ? nil : "failed");

 }