Token: assert that multicompare patterns don't begin with some %% command

lib/token.cpp

@@ -603,6 +603,9 @@ bool Token::Match(const Token *tok, const char pattern[], unsigned int varid)
                 return false;
             }
             
+            // debugging: assert that this is not part of a multicompare pattern..
+            assert(*p != '|');
+
             tok = tok->next();
             continue;
         }