runTaks: Define runner

src/org/moodle/ci/Task.groovy

@@ -74,18 +74,18 @@ class Task {
 
             return pathToRunner
         } else if (moodleVersion) {
-            runner = "${script.env.HOME}/scripts/runner/${moodleVersion.name}/run.sh"
+            def runner = "${script.env.HOME}/scripts/runner/${moodleVersion.name}/run.sh"
             if (!fileExists(runner)) {
                 runner = "${script.env.HOME}/scripts/runner/master/run.sh"
             }
 
             return runner
         } else {
-            versionName = sh (
+            def versionName = sh (
               script: 'grep "\\$branch" moodle/version.php | sed "s/^[^\']*\'\\([^\']*\\).*\$/\\1/"',
               returnStdout: true
               ).trim()
-            runner = "${script.env.HOME}/scripts/runner/${versionName}/run.sh"
+            def runner = "${script.env.HOME}/scripts/runner/${versionName}/run.sh"
 
             if (!fileExists(runner)) {
               runner = "${script.env.HOME}/scripts/runner/master/run.sh"