Fix crash on MethodCallableNode on do while

Author: samsonasik

src/Node/Printer/ExprPrinter.php

@@ -3,6 +3,7 @@
 namespace PHPStan\Node\Printer;
 
 use PhpParser\Node\Expr;
+use PHPStan\Node\MethodCallableNode;
 
 /**
  * @api
@@ -19,6 +20,9 @@ public function printExpr(Expr $expr): string
 		/** @var string|null $exprString */
 		$exprString = $expr->getAttribute('phpstan_cache_printer');
 		if ($exprString === null) {
+			if ($expr instanceof MethodCallableNode) {
+				$expr = $expr->getOriginalNode();
+			}
 			$exprString = $this->printer->prettyPrintExpr($expr);
 			$expr->setAttribute('phpstan_cache_printer', $exprString);
 		}

tests/PHPStan/Rules/Methods/CallMethodsRuleTest.php

@@ -3491,4 +3491,14 @@ public function testBug4801(): void
 		$this->analyse([__DIR__ . '/data/bug-4801.php'], []);
 	}
 
+	public function testBug12246(): void
+	{
+		$this->checkThisOnly = false;
+		$this->checkNullables = false;
+		$this->checkUnionTypes = false;
+		$this->checkExplicitMixed = false;
+
+		$this->analyse([ __DIR__ . '/data/first_class_callable_do_while.php'], []);
+	}
+
 }

tests/PHPStan/Rules/Methods/data/first_class_callable_do_while.php

@@ -0,0 +1,18 @@
+<?php declare(strict_types=1);
+
+namespace FirstClassCallableInDoWhile;
+
+final class SomeFirstClassCallableInDoWhile
+{
+    public function getSubscribedEvents()
+    {
+        do {
+
+        } while ($this->textElement(...));
+    }
+
+    public function textElement()
+    {
+         return 1;
+    }
+}