Change Details

**Steps to reproduce** # Try `pywikibot.Site('wikimania', 'wikimania').search('hello')` **Expected behavior** Should work fine. **Current behavior** ```WARNING: API error toomanyvalues: Too many values supplied for parameter "gsrnamespace". The limit is 50.``` **Configuration**

**Steps to reproduce** # Try `pywikibot.Site('wikimania', 'wikimania').search('hello')` **Expected behavior** Should work fine. **Current behavior** Fails with the following error: ```WARNING: API error toomanyvalues: Too many values supplied for parameter "gsrnamespace". The limit is 50.``` If we ask API for namespaces automatically and then try to search wikimania using API:Search, this is not expected.

**Steps to reproduce** # Try `pywikibot.Site('wikimania', 'wikimania').search('hello')` **Expected behavior** Should work fine. **Current behavior** Fails with the following error: ```WARNING: API error toomanyvalues: Too many values supplied for parameter "gsrnamespace". The limit is 50.``` **Configuration** If we ask API for namespaces automatically and then try to search wikimania using API:Search, this is not expected.