tcg/optimize: Use finish_folding in fold_cmpsel_vec

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
diff --git a/tcg/optimize.c b/tcg/optimize.c
index ccdac7b..4090ffe 100644
--- a/tcg/optimize.c
+++ b/tcg/optimize.c
@@ -2501,7 +2501,7 @@
     if (swap_commutative(op->args[0], &op->args[4], &op->args[3])) {
         op->args[5] = tcg_invert_cond(op->args[5]);
     }
-    return false;
+    return finish_folding(ctx, op);
 }
 
 static bool fold_sextract(OptContext *ctx, TCGOp *op)