[TypeDeclaration] Skip maybe not returned on while on ReturnUnionType…

…Rector (#5812)

rules-tests/TypeDeclaration/Rector/ClassMethod/ReturnUnionTypeRector/Fixture/skip_while_maybe_returned.php.inc

@@ -0,0 +1,17 @@
+<?php
+
+namespace Rector\Tests\TypeDeclaration\Rector\ClassMethod\ReturnUnionTypeRector\Fixture;
+
+final class SkipWhileMaybeNeverReturned
+{
+    public function run(int $i)
+    {
+        while (++$i < 1) {
+            if (rand(0,1)) {
+                return 1;
+            }
+
+            return '1';
+        }
+    }
+}

rules/TypeDeclaration/TypeInferer/SilentVoidResolver.php

@@ -151,7 +151,7 @@ private function isDoOrWhileWithAlwaysReturnOrExit(Stmt $stmt): bool
             return false;
         }
 
-        return ! $this->isFoundLoopControl($stmt);;
+        return $stmt instanceof Do_ && ! $this->isFoundLoopControl($stmt);;
     }
 
     private function isIfReturn(Stmt|Expr $stmt): bool