Fix invalid class name (NullPointerException -> InvalidArgumentException)

Fixes #514

Author: giggsey

src/PhoneNumberMatch.php

@@ -28,7 +28,6 @@ class PhoneNumberMatch
      * @param int $start The start index into the target text
      * @param string $rawString The matched substring of the target text
      * @param PhoneNumber $number The matched phone number
-     * @throws \NullPointerException
      */
     public function __construct($start, $rawString, PhoneNumber $number)
     {
@@ -37,7 +36,7 @@ public function __construct($start, $rawString, PhoneNumber $number)
         }
 
         if ($rawString === null) {
-            throw new \NullPointerException;
+            throw new \InvalidArgumentException('$rawString must be a string');
         }
 
         $this->start = $start;

src/PhoneNumberMatcher.php

@@ -268,7 +268,6 @@ protected static function limit($lower, $upper)
      * @param AbstractLeniency $leniency The leniency to use when evaluating candidate phone numbers
      * @param int $maxTries The maximum number of invalid numbers to try before giving up on the text.
      *  This is to cover degenerate cases where the text has a lot of false positives in it. Must be >= 0
-     * @throws \NullPointerException
      * @throws \InvalidArgumentException
      */
     public function __construct(PhoneNumberUtil $util, $text, $country, AbstractLeniency $leniency, $maxTries)

tests/core/PhoneNumberMatchTest.php

@@ -36,7 +36,7 @@ public function testIllegalArguments()
         try {
             new PhoneNumberMatch(10, null, new PhoneNumber());
             $this->fail();
-        } catch (\NullPointerException $e) {
+        } catch (\InvalidArgumentException $e) {
             $this->addToAssertionCount(1);
         }
     }