Apply fixes from StyleCI

src/OrientatedItemFactory.php

@@ -60,7 +60,7 @@ public function getBestOrientation(
         $usableOrientations = $this->getUsableOrientations($possibleOrientations, $isLastItem);
 
         if (empty($usableOrientations)) {
-            return null;
+            return;
         }
 
         usort($usableOrientations, function (OrientatedItem $a, OrientatedItem $b) use ($widthLeft, $lengthLeft, $depthLeft, $nextItem) {

src/PackedBox.php

@@ -120,6 +120,7 @@ public function getWeight()
     {
         return $this->box->getEmptyWeight() + $this->getItemWeight();
     }
+
     /**
      * Get packed weight of the items only.
      *
@@ -135,6 +136,7 @@ public function getItemWeight()
         foreach (clone $this->items as $item) {
             $this->itemWeight += $item->getWeight();
         }
+
         return $this->itemWeight;
     }
 
@@ -228,6 +230,7 @@ public function getUsedVolume()
         foreach (clone $this->items as $item) {
             $volume += ($item->getWidth() * $item->getLength() * $item->getDepth());
         }
+
         return $volume;
     }
 

src/PackedBoxList.php

@@ -43,6 +43,7 @@ public function compare($boxA, $boxB)
         if ($choice == 0) {
             $choice = $boxA->getWeight() - $boxB->getWeight();
         }
+
         return $choice;
     }
 

tests/PackerTest.php

@@ -151,7 +151,7 @@ public function testIssue52C()
 
     /**
      * Where 2 perfectly filled boxes are a choice, need to ensure we pick the larger one or there is a cascading
-     * failure of many small boxes instead of a few larger ones
+     * failure of many small boxes instead of a few larger ones.
      */
     public function testIssue38()
     {