Remove an unnecessary atomic.

miniaudio.h

@@ -10448,7 +10448,7 @@ struct ma_node_output_bus
     ma_uint8 channels;                                      /* The number of channels in the audio stream for this bus. */
 
     /* Mutable via multiple threads. Must be used atomically. The weird ordering here is for packing reasons. */
-    MA_ATOMIC(1, ma_uint8) inputNodeInputBusIndex;          /* The index of the input bus on the input. Required for detaching. */
+    ma_uint8 inputNodeInputBusIndex;                        /* The index of the input bus on the input. Required for detaching. Will only be used within the spinlock so does not need to be atomic. */
     MA_ATOMIC(4, ma_uint32) flags;                          /* Some state flags for tracking the read state of the output buffer. A combination of MA_NODE_OUTPUT_BUS_FLAG_*. */
     MA_ATOMIC(4, ma_uint32) refCount;                       /* Reference count for some thread-safety when detaching. */
     MA_ATOMIC(4, ma_bool32) isAttached;                     /* This is used to prevent iteration of nodes that are in the middle of being detached. Used for thread safety. */
@@ -10472,7 +10472,7 @@ struct ma_node_input_bus
     MA_ATOMIC(4, ma_spinlock) lock;         /* Unfortunate lock, but significantly simplifies the implementation. Required for thread-safe attaching and detaching. */
 
     /* Set once at startup. */
-    ma_uint8 channels;                  /* The number of channels in the audio stream for this bus. */
+    ma_uint8 channels;                      /* The number of channels in the audio stream for this bus. */
 };
 
 
@@ -10480,7 +10480,7 @@ typedef struct ma_node_base ma_node_base;
 struct ma_node_base
 {
     /* These variables are set once at startup. */
-    ma_node_graph* pNodeGraph;  /* The graph this node belongs to. */
+    ma_node_graph* pNodeGraph;              /* The graph this node belongs to. */
     const ma_node_vtable* vtable;
     float* pCachedData;                     /* Allocated on the heap. Fixed size. Needs to be stored on the heap because reading from output buses is done in separate function calls. */
     ma_uint16 cachedDataCapInFramesPerBus;  /* The capacity of the input data cache in frames, per bus. */
@@ -69551,7 +69551,7 @@ static void ma_node_input_bus_attach(ma_node_input_bus* pInputBus, ma_node_outpu
         old input bus has been updated so that pOutputBus will not get iterated again.
         */
         pOutputBus->pInputNode             = pNewInputNode;                     /* No need for an atomic assignment here because modification of this variable always happens within a lock. */
-        pOutputBus->inputNodeInputBusIndex = (ma_uint8)inputNodeInputBusIndex;  /* As above. */
+        pOutputBus->inputNodeInputBusIndex = (ma_uint8)inputNodeInputBusIndex;
 
         /*
         Now we need to attach the output bus to the linked list. This involves updating two pointers on