Avoid using an object if it does not exists (#19058)

lib/ansible/modules/system/sefcontext.py

@@ -103,7 +103,8 @@ except ImportError:
     HAVE_SEOBJECT=False
 
 ### Add missing entries (backward compatible)
-seobject.file_types.update(dict(
+if HAVE_SEOBJECT:
+    seobject.file_types.update(dict(
         a = seobject.SEMANAGE_FCONTEXT_ALL,
         b = seobject.SEMANAGE_FCONTEXT_BLOCK,
         c = seobject.SEMANAGE_FCONTEXT_CHAR,
@@ -112,7 +113,7 @@ seobject.file_types.update(dict(
         l = seobject.SEMANAGE_FCONTEXT_LINK,
         p = seobject.SEMANAGE_FCONTEXT_PIPE,
         s = seobject.SEMANAGE_FCONTEXT_SOCK,
-))
+    ))
 
 ### Make backward compatible
 option_to_file_type_str = dict(