fixup! fixup! refactor: Convert Enginemixer to unique_ptr instead or …

…owning* and move to initializer list

src/engine/enginemixer.cpp

@@ -320,20 +320,19 @@ void EngineMixer::processChannels(int iBufferSize) {
     }
 
     // Now that the list is built and ordered, do the processing.
-    std::for_each(m_activeChannels.cbegin() + activeChannelsStartIndex,
-            m_activeChannels.cend(),
-            [this, iBufferSize](ChannelInfo* pChannelInfo) {
-                auto& pChannel = pChannelInfo->m_pChannel;
-                DEBUG_ASSERT(pChannelInfo->m_pBuffer.size() >= iBufferSize);
-                pChannel->process(pChannelInfo->m_pBuffer.data(), iBufferSize);
-
-                // Collect metadata for effects
-                if (m_pEngineEffectsManager) {
-                    GroupFeatureState features;
-                    pChannel->collectFeatures(&features);
-                    pChannelInfo->m_features = features;
-                }
-            });
+    for (int i = activeChannelsStartIndex; i < m_activeChannels.size(); ++i) {
+        ChannelInfo* pChannelInfo = m_activeChannels[i];
+        auto& pChannel = pChannelInfo->m_pChannel;
+        DEBUG_ASSERT(pChannelInfo->m_pBuffer.size() >= iBufferSize);
+        pChannel->process(pChannelInfo->m_pBuffer.data(), iBufferSize);
+
+        // Collect metadata for effects
+        if (m_pEngineEffectsManager) {
+            GroupFeatureState features;
+            pChannel->collectFeatures(&features);
+            pChannelInfo->m_features = features;
+        }
+    }
     // Do internal sync lock post-processing before the other
     // channels.
     // Note, because we call this on the internal clock first,