qisrc: do not crash when fetching hook fails
qisrc: do not crash when fetching hook fails

Fixes #14580

Change-Id: I57b1c8f73561e0350748e471ca11bdf902c4cfaa
Reviewed-on: http://gerrit.aldebaran.lan/21166
Tested-by: gerrit
Reviewed-by: dmerejkowsky <1e4b13000fa8777df4cefd2fd8215187e3deb062@aldebaran-robotics.com>

dmerejkowsky/qibuild,aldebaran/qibuild,dmerejkowsky/qibuild,dmerejkowsky/qibuild,aldebaran/qibuild,aldebaran/qibuild,dmerejkowsky/qibuild,dmerejkowsky/qibuild,aldebaran/qibuild