patch 9.1.0042: Missing test for Chuck Filetype

Problem:  Missing test for Chuck filetype
          after commit 27a4632af6
          (Christian Clason)
Solution: Add a filetype test

Signed-off-by: Christian Brabandt <cb@256bit.org>

src/testdir/test_filetype.vim

@@ -150,6 +150,7 @@ def s:GetFilenameChecks(): dict<list<string>>
     chatito: ['file.chatito'],
     chill: ['file..ch'],
     chordpro: ['file.chopro', 'file.crd', 'file.cho', 'file.crdpro', 'file.chordpro'],
+    chuck: ['file.ck'],
     cl: ['file.eni'],
     clean: ['file.dcl', 'file.icl'],
     clojure: ['file.clj', 'file.cljs', 'file.cljx', 'file.cljc'],

src/version.c

@@ -704,6 +704,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    42,
 /**/
     41,
 /**/