Fixed: whitelisting multiple sass directories for build-css goal not possible in version 6.2.10.16

[ktor]

Theme plugin build ends with null pointer exception if following configuration is used with liferay 6.2:

                <groupId>com.liferay.maven.plugins</groupId>
                <artifactId>liferay-maven-plugin</artifactId>
                <version>6.2.10.16</version>
                <executions>
                    <execution>
                        <phase>generate-sources</phase>
                        <goals>
                            <goal>theme-merge</goal>
                            <goal>build-css</goal>
                            <goal>build-thumbnail</goal>
                        </goals>
                    </execution>
                </executions>
                <configuration>
                    <sassDirNames>/theme1/css,/theme2/css,/theme3/css</sassDirNames>
                    (...)
                </configuration>
            </plugin>

Problematic line

Solution, removed condition that sassDirNames are processed only for liferay version lower than 6.2. Liferay 6.2 is prepared for multiple values in the sassDirNames list