always infer info except when playing single colour

Was there some reason we weren't generally doing this?  It's not strictly needed since the info will be generated very shortly by the engine, but it does reduce the feeling of lag.

src/95_renderer.js

@@ -224,12 +224,15 @@ function NewRenderer() {
 		//
 		// The whole thing is a bit sketchy, maybe.
 
-		if (config.behaviour !== "halt" && config.behaviour !== "analysis_locked") {
+		if (config.behaviour === "play_white" || config.behaviour === "play_black") {
 			return;
 		}
 
 		let node = this.tree.node;
 
+		if (node.terminal_reason() !== "") {
+			return;
+		}
 		if (!node.parent) {
 			return;
 		}
@@ -297,7 +300,6 @@ function NewRenderer() {
 
 		let new_info = NewInfo(node.board, nextmove);
 
-
 		new_info.__ghost = true;
 		new_info.__touched = true;
 		new_info.pv = pv;