[luksbootkeyfile] Refactor static function to outside class

src/modules/luksbootkeyfile/LuksBootKeyFileJob.cpp

@@ -66,27 +66,15 @@ struct LuksDevice
     QString passphrase;
 };
 
-struct LuksDeviceList
-{
-    LuksDeviceList( const QVariant& partitions )
-        : valid( false )
-    {
-        if ( partitions.canConvert< QVariantList >() )
-        {
-            devices = getLuksDevices( partitions.toList() );
-            valid = true;
-        }
-    }
-
-    /** @brief Extract the luks passphrases setup.
+/** @brief Extract the luks passphrases setup.
  *
  * Given a list of partitions (as set up by the partitioning module,
  * so there's maps with keys inside), returns just the list of
  * luks passphrases for each device.
  */ 
-    static QList< LuksDevice >
-    getLuksDevices( const QVariantList& list )
-    {
+static QList< LuksDevice >
+getLuksDevices( const QVariantList& list )
+{
     QList< LuksDevice > luksItems;
 
     for ( const auto& p : list )
@@ -101,6 +89,18 @@ struct LuksDeviceList
         }
     }
     return luksItems;
+}
+
+struct LuksDeviceList
+{
+    LuksDeviceList( const QVariant& partitions )
+        : valid( false )
+    {
+        if ( partitions.canConvert< QVariantList >() )
+        {
+            devices = getLuksDevices( partitions.toList() );
+            valid = true;
+        }
     }
 
     QList< LuksDevice > devices;