fixup! Extend mongo.batchCursor with MaxAwaitTime for validation

Author: prestonvasquez

mongo/cursor.go

@@ -195,7 +195,8 @@ func (c *Cursor) next(ctx context.Context, nonBlocking bool) bool {
 	// operation-level timeout via contexts to a constructor and then that timeout
 	// later be applied while working with a resulting cursor. Instead, it is more
 	// idiomatic to apply the timeout to the context passed to Next or TryNext.
-	if !nonBlocking && !mongoutil.TimeoutWithinContext(ctx, c.bc.MaxAwaitTime()) {
+	maxAwaitTime := c.bc.MaxAwaitTime() //
+	if maxAwaitTime != nil && !nonBlocking && !mongoutil.TimeoutWithinContext(ctx, *maxAwaitTime) {
 		c.err = fmt.Errorf("MaxAwaitTime must be less than the operation timeout")
 
 		return false