assignment count mismatch: 2 = 1.

R=ken
OCL=23534
CL=23534
diff --git a/src/cmd/gc/go.h b/src/cmd/gc/go.h
index 461c00b..abb08eb 100644
--- a/src/cmd/gc/go.h
+++ b/src/cmd/gc/go.h
@@ -185,6 +185,7 @@
 	uchar	iota;		// OLITERAL made from iota
 	uchar	embedded;	// ODCLFIELD embedded type
 	uchar	colas;		// OAS resulting from :=
+	uchar	diag;		// already printed error about this
 
 	// most nodes
 	Node*	left;