fixed typo

Author: Shuhei Tanuma

repository.c

@@ -93,7 +93,7 @@ PHP_METHOD(git2_repository, __construct)
 		}
 
 		m_repository->repository = repository;
-		php_git_add_protected_property_string_ex(getThis(),
+		php_git2_add_protected_property_string_ex(getThis(),
 			"path",sizeof("path"),
 			git_repository_path(repository),
 		1 TSRMLS_CC);
@@ -401,4 +401,4 @@ void php_git2_repository_init(TSRMLS_D)
 	INIT_NS_CLASS_ENTRY(ce, PHP_GIT2_NS, "Repository", php_git2_repository_methods);
 	git2_repository_class_entry = zend_register_internal_class(&ce TSRMLS_CC);
 	git2_repository_class_entry->create_object = php_git2_repository_new;
-}
+}