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plumber: fix memory leaks

--- a/sys/src/cmd/plumb/plumber.c

+++ b/sys/src/cmd/plumb/plumber.c

@@ -122,6 +122,7 @@

 	p = malloc(n);

 	if(p == nil)

 		error("malloc failed: %r");

+	setmalloctag(p, getcallerpc(&n));

 	memset(p, 0, n);

 	return p;

 }

@@ -132,6 +133,7 @@

 	p = realloc(p, n);

 	if(p == nil)

 		error("realloc failed: %r");

+	setrealloctag(p, getcallerpc(&p));

 	return p;

 }

@@ -143,5 +145,6 @@

 	t = strdup(s);

 	if(t == nil)

 		error("estrdup failed: %r");

+	setmalloctag(t, getcallerpc(&s));

 	return t;

 }

--- a/sys/src/cmd/plumb/rules.c

+++ b/sys/src/cmd/plumb/rules.c

@@ -123,6 +123,7 @@

 		Bterm(in->fd);

 		free(in->fd);

 	}

+	free(in->file);

 	free(in);

 	return 1;

 }

@@ -572,6 +573,7 @@

 					parseerror("too many ports");

 				if(lookup(r->qarg, badports) >= 0)

 					parseerror("illegal port name %s", r->qarg);

+				free(rs->port);

 				rs->port = estrdup(r->qarg);

 			}else

 				ncmd++;	/* start or client rule */

-- 

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