Review: save val cause

Author: zuevmaxim

kotlinx-coroutines-core/common/src/CoroutineExceptionHandler.kt

@@ -16,7 +16,7 @@ import kotlin.coroutines.*
  */
 @InternalCoroutinesApi
 public fun handleCoroutineException(context: CoroutineContext, exception: Throwable) {
-    val reportException = if (exception is DispatchException) exception.cause!! else exception
+    val reportException = if (exception is DispatchException) exception.cause else exception
     // Invoke an exception handler from the context if present
     try {
         context[CoroutineExceptionHandler]?.let {

kotlinx-coroutines-core/common/src/internal/DispatchedTask.kt

@@ -113,7 +113,7 @@ internal abstract class DispatchedTask<in T> internal constructor(
             val result = runCatching { taskContext.afterTask() }
             handleFatalException(fatalException, result.exceptionOrNull())
             if (dispatchException != null) {
-                handleCoroutineException(delegate.context, dispatchException.cause!!)
+                handleCoroutineException(delegate.context, dispatchException.cause)
             }
         }
     }

kotlinx-coroutines-core/common/src/intrinsics/Cancellable.kt

@@ -60,7 +60,7 @@ private fun dispatcherFailure(completion: Continuation<*>, e: Throwable) {
      * 2) Rethrow the exception immediately, so it will crash the caller (e.g. when the coroutine had
      *    no parent or it was async/produce over MainScope).
      */
-    val reportException = if (e is DispatchException) e.cause!! else e
+    val reportException = if (e is DispatchException) e.cause else e
     completion.resumeWith(Result.failure(reportException))
     throw reportException
 }