RFR: 7903757: Fixing 'CreateWorkdir06' test script due to compilation error.

[gollayadav]

Fixing 'CreateWorkdir06' test script due to compilation error.

---
compile:
    [javac] /scratch/files/jenkins/workspace/QA/javatest/jt_gui_automation_verification/jt_gui_lin/jtharness/gui-tests/src/build.xml:159: warning: 'includeantruntime' was not set, defaulting to build.sysclasspath=last; set to false for repeatable builds
    [javac] Compiling 189 source files to /scratch/files/jenkins/workspace/QA/javatest/jt_gui_automation_verification/jt_gui_lin/jtharness/gui-tests/src/build/tests/gui/classes
    [javac] warning: [options] bootstrap class path not set in conjunction with -source 8
    [javac] /scratch/files/jenkins/workspace/QA/javatest/jt_gui_automation_verification/jt_gui_lin/jtharness/gui-tests/src/gui/src/jthtest/CreateWorkdir/CreateWorkdir06.java:44: error: invalid method declaration; return type required
    [javac] public CreateWorkdir02() {
    [javac] ^
    [javac] 1 error
    [javac] 1 warning

-------------

Commit messages:
 - 7903757: Fixing 'CreateWorkdir06' test script due to compilation error.

Changes: https://git.openjdk.org/jtharness/pull/72/files
  Webrev: https://webrevs.openjdk.org/?repo=jtharness&pr=72&range=00
  Issue: https://bugs.openjdk.org/browse/CODETOOLS-7903757
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jtharness/pull/72.diff
  Fetch: git fetch https://git.openjdk.org/jtharness.git pull/72/head:pull/72

PR: https://git.openjdk.org/jtharness/pull/72