wasm: Dont access QNetworkReply header data through dangling pointer

Fixes: QTBUG-122893
Change-Id: I3768fdffaec7be4ec0b559fdb365600220e648d1
Reviewed-by: Lorn Potter <lorn.potter@gmail.com>
(cherry picked from commit a5b00cefef12999e9a213943855abe6bc0ab5365)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>
(cherry picked from commit 9a59f6bc574e3b9dfa09ac33e6dd951f105f87bb)
Reviewed-by: Piotr Wierciński <piotr.wiercinski@qt.io>

2 files changed, 2 insertions, 2 deletions

diff --git a/src/corelib/kernel/qeventdispatcher_wasm_p.h b/src/corelib/kernel/qeventdispatcher_wasm_p.h
index 564bbffa47..09231e0d4c 100644
--- a/src/corelib/kernel/qeventdispatcher_wasm_p.h
+++ b/src/corelib/kernel/qeventdispatcher_wasm_p.h
@@ -53,6 +53,7 @@ public:
     void interrupt() override;
     void wakeUp() override;
 
+    static void runOnMainThread(std::function<void(void)> fn);
     static void runOnMainThreadAsync(std::function<void(void)> fn);
     static void socketSelect(int timeout, int socket, bool waitForRead, bool waitForWrite,
                             bool *selectForRead, bool *selectForWrite, bool *socketDisconnect);
@@ -89,7 +90,6 @@ private:
                             bool *selectForRead, bool *selectForWrite, bool *socketDisconnect);
 
     static void run(std::function<void(void)> fn);
-    static void runOnMainThread(std::function<void(void)> fn);
     static void runAsync(std::function<void(void)> fn);
 
     static QEventDispatcherWasm *g_mainThreadEventDispatcher;
diff --git a/src/network/access/qnetworkreplywasmimpl.cpp b/src/network/access/qnetworkreplywasmimpl.cpp
index f7380a10d9..eb3e50dec8 100644
--- a/src/network/access/qnetworkreplywasmimpl.cpp
+++ b/src/network/access/qnetworkreplywasmimpl.cpp
@@ -297,7 +297,7 @@ void QNetworkReplyWasmImplPrivate::doSendRequest()
     attr.destinationPath = destinationPath.constData();
 
     auto url = request.url().toString().toUtf8();
-    QEventDispatcherWasm::runOnMainThreadAsync([attr, url]() mutable {
+    QEventDispatcherWasm::runOnMainThread([attr, url]() mutable {
         emscripten_fetch(&attr, url);
     });
     state = Working;