Separate a couple assignments from conditionals

al/source.cpp

@@ -3159,7 +3159,8 @@ START_API_FUNC
     /* Source is now streaming */
     source->SourceType = AL_STREAMING;
 
-    if(!(BufferList=source->queue))
+    BufferList = source->queue;
+    if(!BufferList)
         source->queue = BufferListStart;
     else
     {

alc/mixvoice.cpp

@@ -820,7 +820,8 @@ void ALvoice::mix(State vstate, ALCcontext *Context, const ALuint SamplesToDo)
 
             ++buffers_done;
             BufferListItem = BufferListItem->mNext.load(std::memory_order_relaxed);
-            if(!BufferListItem && !(BufferListItem=BufferLoopItem))
+            if(!BufferListItem) BufferListItem = BufferLoopItem;
+            if(!BufferListItem)
             {
                 if LIKELY(vstate == ALvoice::Playing)
                     vstate = ALvoice::Stopped;