fix stuck note e.g. in Hyrule field

libs/JSystem/src/JKernel/JKRHeap.cpp

@@ -585,7 +585,13 @@ void* operator new(size_t size JKR_HEAP_TOKEN_PARAM, int alignment) {
 #endif
 
 void* operator new(size_t size JKR_HEAP_TOKEN_PARAM, JKRHeap* heap, int alignment) {
-    return JKRHeap::alloc(size, alignment, heap);
+    void* mem = JKRHeap::alloc(size, alignment, heap);
+#if TARGET_PC
+    if (mem == nullptr) {
+        return fallback_alloc(size, abs(alignment), true);
+    }
+#endif
+    return mem;
 }
 
 #if !TARGET_PC

src/dusk/audio/DuskDsp.cpp

@@ -125,6 +125,11 @@ void dusk::audio::DspRender(OutputSubframe& subframe) {
             continue;
         }
 
+        if (channel.mForcedStop) {
+            channel.mIsFinished = true;
+            continue;
+        }
+
         if (channel.mBytesPerBlock == 0) {
             // I think these are oscillator channels? Not backed by audio.
             channel.mIsFinished = true;