simplify

Author: staabm

src/Analyser/MutatingScope.php

@@ -3562,7 +3562,7 @@ private function createConditionalExpressions(
 
 		$typeGuards = [];
 		foreach ($newVariableTypes as $exprString => $holder) {
-			if ($holder->getExpr() instanceof PossiblyImpureCallExpr) {
+			if ($holder->getExpr() instanceof VirtualNode) {
 				continue;
 			}
 			if (!array_key_exists($exprString, $mergedExpressionTypes)) {
@@ -3591,7 +3591,7 @@ private function createConditionalExpressions(
 		}
 
 		foreach ($newVariableTypes as $exprString => $holder) {
-			if ($holder->getExpr() instanceof PossiblyImpureCallExpr) {
+			if ($holder->getExpr() instanceof VirtualNode) {
 				continue;
 			}
 			if (
@@ -3627,9 +3627,6 @@ private function createConditionalExpressions(
 			if (array_key_exists($exprString, $ourExpressionTypes)) {
 				continue;
 			}
-			if ($mergedExprTypeHolder->getExpr() instanceof PossiblyImpureCallExpr) {
-				continue;
-			}
 
 			foreach ($typeGuards as $guardExprString => $guardHolder) {
 				$conditionalExpression = new ConditionalExpressionHolder([$guardExprString => $guardHolder], new ExpressionTypeHolder($mergedExprTypeHolder->getExpr(), new ErrorType(), TrinaryLogic::createNo()));