chore: code cleanup (#278)

Author: phil-davis

src/JWT.php

@@ -448,7 +448,7 @@ private static function encodeDER($type, $value)
      * Encodes signature from a DER object.
      *
      * @param   string  $der binary signature in DER format
-     * @param   int     $keySize the nubmer of bits in the key
+     * @param   int     $keySize the number of bits in the key
      * @return  string  the signature
      */
     private static function signatureFromDER($der, $keySize)

tests/JWTTest.php

@@ -159,7 +159,7 @@ public function testInvalidTokenWithNbfLeeway()
             "nbf"     => time() + 65); // not before too far in future
         $encoded = JWT::encode($payload, 'my_key');
         $this->setExpectedException('Firebase\JWT\BeforeValidException');
-        $decoded = JWT::decode($encoded, 'my_key', array('HS256'));
+        JWT::decode($encoded, 'my_key', array('HS256'));
         JWT::$leeway = 0;
     }
 
@@ -183,7 +183,7 @@ public function testInvalidTokenWithIatLeeway()
             "iat"     => time() + 65); // issued too far in future
         $encoded = JWT::encode($payload, 'my_key');
         $this->setExpectedException('Firebase\JWT\BeforeValidException');
-        $decoded = JWT::decode($encoded, 'my_key', array('HS256'));
+        JWT::decode($encoded, 'my_key', array('HS256'));
         JWT::$leeway = 0;
     }
 
@@ -194,7 +194,7 @@ public function testInvalidToken()
             "exp" => time() + 20); // time in the future
         $encoded = JWT::encode($payload, 'my_key');
         $this->setExpectedException('Firebase\JWT\SignatureInvalidException');
-        $decoded = JWT::decode($encoded, 'my_key2', array('HS256'));
+        JWT::decode($encoded, 'my_key2', array('HS256'));
     }
 
     public function testNullKeyFails()
@@ -204,7 +204,7 @@ public function testNullKeyFails()
             "exp" => time() + JWT::$leeway + 20); // time in the future
         $encoded = JWT::encode($payload, 'my_key');
         $this->setExpectedException('InvalidArgumentException');
-        $decoded = JWT::decode($encoded, null, array('HS256'));
+        JWT::decode($encoded, null, array('HS256'));
     }
 
     public function testEmptyKeyFails()
@@ -214,7 +214,7 @@ public function testEmptyKeyFails()
             "exp" => time() + JWT::$leeway + 20); // time in the future
         $encoded = JWT::encode($payload, 'my_key');
         $this->setExpectedException('InvalidArgumentException');
-        $decoded = JWT::decode($encoded, '', array('HS256'));
+        JWT::decode($encoded, '', array('HS256'));
     }
 
     public function testRSEncodeDecode()