Make handling of enums in rules check more robust

Earlier versions of this check erroneously treated the end of an enum
as the end of its enclosing message, leading to problems with nested
enums if they appeared not at the end of its enclosing messages.

Signed-off-by: Pierre R. Mai <pmai@pmsf.de>

Author: pmai

tests/test_rules.py

@@ -92,11 +92,10 @@ def test_rules_compliance(self):
 
                     # Search for a closing brace.
                     matchClosingBrace = re.search("}", statement)
-                    if numMessage > 0 and matchClosingBrace is not None:
-                        numMessage -= 1
-
                     if isEnum is True and matchClosingBrace is not None:
                         isEnum = False
+                    elif numMessage > 0 and matchClosingBrace is not None:
+                        numMessage -= 1
 
                     if matchComment is not None:
                         if re.search(r"^[ ]\\\bendrules\b$", comment) is not None:
@@ -130,4 +129,4 @@ def test_rules_compliance(self):
                         lineruleCount += 1
 
 if __name__ == '__main__':
-    unittest.main()
+    unittest.main()