Check arm64 too

Change-Id: I51f89eb05f7844a7b0a99eab1587bbe333b96b09
diff --git a/include/LibreOfficeKit/LibreOfficeKitInit.h b/include/LibreOfficeKit/LibreOfficeKitInit.h
index 15b9a67..322ba8b 100644
--- a/include/LibreOfficeKit/LibreOfficeKitInit.h
+++ b/include/LibreOfficeKit/LibreOfficeKitInit.h
@@ -158,7 +158,7 @@ static void *lok_dlopen( const char *install_path, char ** _imp_lib )

    *_imp_lib = NULL;

#if !(defined(__APPLE__) && defined(__arm__))
#if !(defined(__APPLE__) && (defined(__arm__) || defined(__arm64__)))
    size_t partial_length;

    if (!install_path)