minor #69 do not count on null (xabbuh)

This PR was merged into the 2.x branch.

Discussion
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do not count on null

Commits
-------

1d708d8 do not count on null

Author: xabbuh

src/Definition.php

@@ -211,14 +211,6 @@ public function equals(Definition $definition)
             return false;
         }
 
-        if (count($this->name) !== count($definition->name)) {
-            return false;
-        }
-
-        if (count($this->description) !== count($definition->description)) {
-            return false;
-        }
-
         if (null !== $this->name xor null !== $definition->name) {
             return false;
         }
@@ -228,6 +220,10 @@ public function equals(Definition $definition)
         }
 
         if (null !== $this->name) {
+            if (count($this->name) !== count($definition->name)) {
+                return false;
+            }
+
             foreach ($this->name as $language => $value) {
                 if (!isset($definition->name[$language])) {
                     return false;
@@ -240,6 +236,10 @@ public function equals(Definition $definition)
         }
 
         if (null !== $this->description) {
+            if (count($this->description) !== count($definition->description)) {
+                return false;
+            }
+
             foreach ($this->description as $language => $value) {
                 if (!isset($definition->description[$language])) {
                     return false;