wasm: fix switching cameras

Fixes: QTBUG-113263
Change-Id: If2a740b4224e6f618896f23ce28dc2b02aa2d6d1
Reviewed-by: Morten Johan Sørvig <morten.sorvig@qt.io>
(cherry picked from commit da90f218005e9f2acae2bf8cce721b01c1a98598)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>

1 files changed, 11 insertions, 7 deletions

diff --git a/src/plugins/multimedia/wasm/mediacapture/qwasmmediacapturesession.cpp b/src/plugins/multimedia/wasm/mediacapture/qwasmmediacapturesession.cpp
index 4454f24f7..7b06bf61f 100644
--- a/src/plugins/multimedia/wasm/mediacapture/qwasmmediacapturesession.cpp
+++ b/src/plugins/multimedia/wasm/mediacapture/qwasmmediacapturesession.cpp
@@ -25,14 +25,18 @@ QPlatformCamera *QWasmMediaCaptureSession::camera()
 
 void QWasmMediaCaptureSession::setCamera(QPlatformCamera *camera)
 {
-    if (!camera)
-        return;
-    QWasmCamera *wasmCamera = static_cast<QWasmCamera *>(camera);
-    if (!wasmCamera || m_camera.data() == wasmCamera)
-        return;
-    m_camera.reset(wasmCamera);
+    if (!camera) {
+        if (m_camera == nullptr)
+            return;
+        m_camera.reset(nullptr);
+    } else {
+        QWasmCamera *wasmCamera = static_cast<QWasmCamera *>(camera);
+        if (m_camera.data() == wasmCamera)
+            return;
+        m_camera.reset(wasmCamera);
+        m_camera->setCaptureSession(this);
+    }
     emit cameraChanged();
-    m_camera->setCaptureSession(this);
 }
 
 QPlatformImageCapture *QWasmMediaCaptureSession::imageCapture()