Replace usages of getParameterTypes().length with getParameterCount() (IIOP)

wildfly-iiop-openjdk  (2 usages found)
            iiop-openjdk/src/main/java/org/wildfly/iiop/openjdk/rmi  (2 usages found)
                ContainerAnalysis.java  (2 usages found)
                    isAccessor(Method)  (1 usage found)
                        302 if (m.getParameterTypes().length != 0)
                    isMutator(Method)  (1 usage found)
                        318 if (m.getParameterTypes().length != 1)