Crash on removing an item after stopping playback

[gnarula]

Steps to reproduce this:

• Open a file
• Stop the playback by clicking on the stop icon
• Remove the file from the playlist

Results in a traceback similar to

** (gnome-mpv:21451): CRITICAL **: MPV API error: error running command

gnome-mpv(+0xeea4)[0x56074d959ea4]
gnome-mpv(+0xe722)[0x56074d959722]
gnome-mpv(+0xdec8)[0x56074d958ec8]
/usr/lib/libgtk-3.so.0(+0x21326c)[0x7f159e41626c]
/usr/lib/libgobject-2.0.so.0(g_closure_invoke+0x145)[0x7f159cb97035]
/usr/lib/libgobject-2.0.so.0(+0x22081)[0x7f159cba9081]
/usr/lib/libgobject-2.0.so.0(g_signal_emit_valist+0xa59)[0x7f159cbb18b9]
/usr/lib/libgobject-2.0.so.0(g_signal_emit+0x8f)[0x7f159cbb214f]
/usr/lib/libgtk-3.so.0(+0x35040c)[0x7f159e55340c]
/usr/lib/libgtk-3.so.0(+0x2107d9)[0x7f159e4137d9]

I guess this is because the "stop" command stops playback and clears the playlist as well. Modifying the playlist thereafter results in a crash.

A plausible solution is to mimic the stop behaviour by pausing playback and seeking to the beginning of the file