Return early if render resources already deallocated

This fixes the crash in macOS and iOS 26.

Author: jcavar

Sources/AudioKitEX/AudioKitAU.swift

@@ -46,6 +46,7 @@ open class AudioKitAU: AUAudioUnit {
     /// Delllocate Render Resources
     override public func deallocateRenderResources() {
         super.deallocateRenderResources()
+        guard renderResourcesAllocated else { return }
         deallocateRenderResourcesDSP(dsp)
         internalBuffers = []
     }