Fix bug that interrupts error handling early

index.js

@@ -66,20 +66,22 @@ module.exports = function simpleSinkStream(_options) {
 					return attemptRead();
 				}).catch(isEndOfStream, (error) => {
 					/* Don't attempt to do another read, we're done.  */
-					if (!onEndCalled && onEnd != null) {
-						onEndCalled = true;
-						
-						return Promise.try(() => {
-							return onEnd();
-						}).then((result) => {
-							if (result !== undefined) {
-								resultBuffer.push(result);
-							}
+					return Promise.try(() => {
+						if (!onEndCalled && onEnd != null) {
+							onEndCalled = true;
+							
+							return Promise.try(() => {
+								return onEnd();
+							}).then((result) => {
+								if (result !== undefined) {
+									resultBuffer.push(result);
+								}
+							});
+						}
+					}).then(() => {
+						return resultBuffer.maybeRead(() => {
+							throw error;
 						});
-					}
-
-					return resultBuffer.maybeRead(() => {
-						throw error;
 					});
 				}).catch((error) => !isAborted(error), (error) => {
 					return Promise.try(() => {