[jsinterp] Adapt to updated YouTube code generation (Fixes #7623, fixes #7624, fixes #7625, fixes #7626)

youtube_dl/jsinterp.py

@@ -214,7 +214,7 @@ class JSInterpreter(object):
         obj = {}
         obj_m = re.search(
             (r'(?:var\s+)?%s\s*=\s*\{' % re.escape(objname)) +
-            r'\s*(?P<fields>([a-zA-Z$0-9]+\s*:\s*function\(.*?\)\s*\{.*?\})*)' +
+            r'\s*(?P<fields>([a-zA-Z$0-9]+\s*:\s*function\(.*?\)\s*\{.*?\}(?:,\s*)?)*)' +
             r'\}\s*;',
             self.code)
         fields = obj_m.group('fields')