[dev.cc] cmd/gc: fix warning on Plan 9

warning: src/cmd/gc/walk.c:1769 set and not used: on

LGTM=rsc
R=rsc, minux
CC=golang-codereviews
https://golang.org/cl/175850043

diff --git a/src/cmd/gc/walk.c b/src/cmd/gc/walk.c
index d4d0f449c3e751e489f58bd5cfdb05ace459f8c3..77f9c80f916319e8b51a368b8a373b8f1861787c 100644 (file)
--- a/src/cmd/gc/walk.c
+++ b/src/cmd/gc/walk.c
@@ -1766,7 +1766,6 @@ walkprint(Node *nn, NodeList **init)
        int notfirst, et, op;
        NodeList *calls;
 
-       on = nil;
        op = nn->op;
        all = nn->list;
        calls = nil;