fix type error

Author: staabm

src/QueryReflection/PdoPgSqlQueryReflector.php

@@ -30,7 +30,7 @@ public function __construct(PDO $pdo)
     /**
      * @return PDOException|array<PDOColumnMeta>|null
      */
-    protected function simulateQuery(string $queryString)
+    protected function simulateQuery(string $queryString) // @phpstan-ignore method.childReturnType
     {
         if (\array_key_exists($queryString, $this->cache)) {
             return $this->cache[$queryString];

src/QueryReflection/ReflectionCache.php

@@ -157,6 +157,9 @@ private function readCachedRecords(bool $useReadLock): ?array
 
         // the schemaHash is only available in replay-and-record mode.
         if (null === $this->schemaHash) {
+            if (!is_string($cache['schemaHash'])) {
+                throw new ShouldNotHappenException();
+            }
             $this->schemaHash = $cache['schemaHash'];
         } elseif ($this->schemaHash !== $cache['schemaHash']) {
             return null;

tests/rules/QueryPlanAnalyzerRuleTest.php

@@ -17,7 +17,7 @@
 class QueryPlanAnalyzerRuleTest extends RuleTestCase
 {
     /**
-     * @var bool|0|positive-int
+     * @var bool
      */
     private $numberOfAllowedUnindexedReads;