Do not use indexed getToken for a single call

Change-Id: Ib1026754a7db034af5910d84d008d0ef997ebb96
Reviewed-on: https://gerrit.libreoffice.org/65672
Tested-by: Jenkins
Reviewed-by: Matteo Casalin <matteo.casalin@yahoo.com>

cppuhelper/source/factory.cxx

@@ -700,8 +700,7 @@ Reference< XInterface > ORegistryFactoryHelper::createModuleFactory()
     {
         aActivatorUrl = xActivatorKey->getAsciiValue();
 
-        sal_Int32 nIndex = 0;
-        aActivatorName = aActivatorUrl.getToken(0, ':', nIndex );
+        aActivatorName = aActivatorUrl.getToken(0, ':');
 
         Reference<XRegistryKey > xLocationKey = xImplementationKey->openKey(
             "/UNO/LOCATION" );