Fix typo in kdesrc-build-setup script. Prior testing was all done with...

Fix typo in kdesrc-build-setup script. Prior testing was all done with kdesrc-build script, and I mistyped an elsif as else in kdesrc-build-setup
Status Job ID Name Coverage
  Test
passed #105925
smoke-test

00:01:51

passed #105924
unit-test

00:00:35