D8533.id20242.diff
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D8533.id20242.diff
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	diff --git a/src/applications/transactions/view/PhabricatorApplicationTransactionView.php b/src/applications/transactions/view/PhabricatorApplicationTransactionView.php
	--- a/src/applications/transactions/view/PhabricatorApplicationTransactionView.php
	+++ b/src/applications/transactions/view/PhabricatorApplicationTransactionView.php
	@@ -193,14 +193,18 @@
	$engine = $this->getOrBuildEngine();
	$comment = $xaction->getComment();

	- if ($xaction->hasComment()) {
	+ if ($comment) {
	if ($comment->getIsDeleted()) {
	return phutil_tag(
	'em',
	array(),
	pht('This comment has been deleted.'));
	- } else {
	+ } else if ($xaction->hasComment()) {
	return $engine->getOutput($comment, $field);
	+ } else {
	+ // This is an empty, non-deleted comment. Usually this happens when
	+ // rendering previews.
	+ return null;
	}
	}