From cdde32a3e1437d80abb2993355cf0a9c4a280991 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=88=98=E5=8B=87=E5=BC=BA?= <1054462882@qq.com>
Date: Mon, 23 Oct 2017 17:16:15 +0800
Subject: [PATCH] [b]fix ios11 crash.

---
 WebViewJavascriptBridge/WKWebViewJavascriptBridge.m | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/WebViewJavascriptBridge/WKWebViewJavascriptBridge.m b/WebViewJavascriptBridge/WKWebViewJavascriptBridge.m
index 47667df6..0d97b6e7 100644
--- a/WebViewJavascriptBridge/WKWebViewJavascriptBridge.m
+++ b/WebViewJavascriptBridge/WKWebViewJavascriptBridge.m
@@ -147,6 +147,8 @@ - (void)webView:(WKWebView *)webView decidePolicyForNavigationAction:(WKNavigati
             [_base logUnkownMessage:url];
         }
         decisionHandler(WKNavigationActionPolicyCancel);
+        // fix ios11 crash.
+        return;
     }
     
     if (strongDelegate && [strongDelegate respondsToSelector:@selector(webView:decidePolicyForNavigationAction:decisionHandler:)]) {