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fix some acme memory leaks

(imported from plan9port 7ca1c90109e17dced4b38fbaadea9d2cf39871b7,
some tag restoration lines not relevant.)

--- a/sys/src/cmd/acme/acme.c

+++ b/sys/src/cmd/acme/acme.c

@@ -307,7 +307,7 @@

 void

 acmeerrorproc(void *)

 {

-	char *buf;

+	char *buf, *s;

 	int n;

 	threadsetname("acmeerrorproc");

@@ -314,8 +314,11 @@

 	buf = emalloc(8192+1);

 	while((n=read(errorfd, buf, 8192)) >= 0){

 		buf[n] = '\0';

-		sendp(cerr, estrdup(buf));

+		s = estrdup(buf);

+		sendp(cerr, s);

+		free(s);

 	}

+	free(buf);

 }

 void

--- a/sys/src/cmd/acme/exec.c

+++ b/sys/src/cmd/acme/exec.c

@@ -159,6 +159,7 @@

 		aa = getbytearg(argt, TRUE, TRUE, &a);

 		if(a){	

 			if(strlen(a) > EVENTSIZE){	/* too big; too bad */

+				free(r);

 				free(aa);

 				free(a);

 				warning(nil, "`argument string too long\n");

-- 

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