diff --git a/core/lib/Drupal/Core/StringTranslation/PluralTranslatableMarkup.php b/core/lib/Drupal/Core/StringTranslation/PluralTranslatableMarkup.php
index 1e23df4..df96fb3 100644
--- a/core/lib/Drupal/Core/StringTranslation/PluralTranslatableMarkup.php
+++ b/core/lib/Drupal/Core/StringTranslation/PluralTranslatableMarkup.php
@@ -150,13 +150,11 @@ protected function getPluralIndex() {
 
     // Pickup index provided by the most weighted module returning a valid
     // value.
-    if ($indexes) {
-      do {
-        $index = array_pop($indexes);
-        if (is_integer($index) && $index >= 0) {
-          return $index;
-        }
-      } while ($indexes);
+    while ($indexes) {
+      $index = array_pop($indexes);
+      if (is_integer($index) && $index >= 0) {
+        return $index;
+      }
     }
     // Return -1 if no module has implemented valid plural formulas.
     return -1;