When templates with same name exist, line numbers might not match and fails scan

[pethers]

java.lang.IllegalArgumentException: 1020 is not a valid line for pointer.

at com.hack23.sonar.cloudformation.CloudformationSensor.addIssue(CloudformationSensor.java:238)
at com.hack23.sonar.cloudformation.CloudformationSensor.handleCfnNagScanReports(CloudformationSensor.java:192)
at com.hack23.sonar.cloudformation.CloudformationSensor.execute(CloudformationSensor.java:131)

version 1.7.1, possible 2.0.9 as well.