Fix: search using API does not respect the passed language list

If there is a search api configured, ULS list all languages that
pass the search irrespective of whether a language is present in
options.languages

Change-Id: I0be80397bb5b4071bc7bc5e787fe107c98e3d912

src/jquery.uls.languagefilter.js

@@ -213,7 +213,9 @@
 						languageFilter.autofill( code, name );
 					}
 
-					if ( languageFilter.render( code ) ) {
+					if ( languageFilter.options.languages[ code ] &&
+						languageFilter.render( code )
+					) {
 						languageFilter.resultCount++;
 					}
 				} );