Return early if render resources already deallocated

This fixes the crash in macOS and iOS 26.

Author: jcavar

Sources/AudioKitEX/AudioKitAU.swift

@@ -45,7 +45,9 @@ open class AudioKitAU: AUAudioUnit {
 
     /// Delllocate Render Resources
     override public func deallocateRenderResources() {
+        let allocated = renderResourcesAllocated
         super.deallocateRenderResources()
+        guard allocated else { return }
         deallocateRenderResourcesDSP(dsp)
         internalBuffers = []
     }