Fix build

tests/default/data/pdo-default-fetch-types.php

@@ -49,7 +49,7 @@ public function specifiedFetchTypes(PDO $pdo, string $q): void
 
         $stmt = $pdo->query($q, PDO::FETCH_COLUMN);
         foreach ($stmt as $row) {
-            assertType('array<int|string, mixed>', $row); // could be array<int|string, float|int|string|null>
+            assertType('mixed', $row); // could be array<int|string, float|int|string|null>
         }
     }
 }

tests/default/data/pdo-fetch-types.php

@@ -40,7 +40,7 @@ public function unsupportedFetchTypes(PDO $pdo)
     {
         $stmt = $pdo->query('SELECT email, adaid FROM ada', PDO::FETCH_COLUMN);
         foreach ($stmt as $row) {
-            assertType('array<int|string, mixed>', $row);
+            assertType('mixed', $row);
         }
     }
 }

tests/default/data/pdo-prepare.php

@@ -186,7 +186,7 @@ public function noInferenceOnBug196(PDO $pdo, array $minorPhpVersions, \DateTime
     {
         $sumQueries = [];
         $dataPointDate = $updateDate->format('Ymd');
-        foreach ($minorPhpVersions as $index => $version) {
+        foreach ($minorPhpVersions as $version) {
             $sumQueries[] = 'SUM(DATA->\'$."'.$version.'"."'.$dataPointDate.'"\')';
         }
         $stmt = $pdo->prepare(
@@ -196,8 +196,9 @@ public function noInferenceOnBug196(PDO $pdo, array $minorPhpVersions, \DateTime
 
         // this query is too dynamic for being analyzed.
         // make sure we don't infer a wrong type.
+        assertType('PDOStatement', $stmt);
         foreach ($stmt as $row) {
-            assertType('array<int|string, mixed>', $row);
+            assertType('mixed', $row);
         }
     }