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Description of problem:
if pointing cheese via -d option to broken device from bug 1444758 or simply to non existent device (like /dev/video1) cheese crashes with segfault.


Version-Release number of selected component (if applicable):
libv4l-0.9.5-4.el7.x86_64
xorg-x11-drv-v4l-0.2.0-47.el7.x86_64
gstreamer1-1.10.4-2.el7.x86_64
cheese-3.22.1-1.el7.x86_64
kernel-3.10.0-656.el7.x86_64

How reproducible:
always

Steps to Reproduce:
1. cheese -d /dev/videoX

Actual results:
segfault

Expected results:


Additional info:

Created attachment 1273553 [details]
backtrace from gdb --args cheese -d /dev/videoX

Still present in cheese-3.22.1-1.el7.x86_64. Moving to 7.5.

I guess this upstream fix should apply for this one too. https://bugzilla.gnome.org/777047

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2018:0910