Squish: Avoid error in tst_build_speedcrunch

Change-Id: I2f199f392016005b8e00e48253838370628875d9
Task-number: QTCREATORBUG-13700
Reviewed-by: Christian Stenger <christian.stenger@theqtcompany.com>
Test TimeLineModel fix compilation

after 516c0d6020c864ecd1a20cc07e30e4452823e03b

Change-Id: I2d2cdf0c899946f9bb792db2a10c12b03dfef4bc
Reviewed-by: Ulf Hermann <ulf.hermann@theqtcompany.com>