Fix custom equalizer presets

Either, there are errors when activating a custom equalizer presets (because name is not known to core), or vlc crashes completely, see below.

0   libsystem_c.dylib             	0x00007fff8cf2843e strstr + 50
1   libequalizer_plugin.dylib     	0x0000000107fd151e EqzInit + 1534 (equalizer.c:387)
2   libequalizer_plugin.dylib     	0x0000000107fd055e Open + 110 (equalizer.c:163)
3   libvlccore.5.dylib            	0x00000001000d8661 generic_start + 129 (modules.c:351)
4   libvlccore.5.dylib            	0x00000001000d838a module_load + 154 (modules.c:185)
5   libvlccore.5.dylib            	0x00000001000d7f5b vlc_module_load + 1211 (modules.c:277)
6   libvlccore.5.dylib            	0x00000001000d85d1 module_need + 65 (modules.c:366)
7   libvlccore.5.dylib            	0x00000001000c03db CreateFilter + 267 (filters.c:400)
8   libvlccore.5.dylib            	0x00000001000bf89e aout_FiltersNew + 1310 (filters.c:496)
9   libvlccore.5.dylib            	0x00000001000be988 aout_CheckReady + 504
10  libvlccore.5.dylib            	0x00000001000be5c8 aout_DecPlay + 328
11  libvlccore.5.dylib            	0x0000000100076a86 DecoderPlayAudio + 854 (decoder.c:1235)
12  libvlccore.5.dylib            	0x0000000100076641 DecoderDecodeAudio + 353 (decoder.c:1293)
13  libvlccore.5.dylib            	0x0000000100074dd8 DecoderProcessAudio + 408 (decoder.c:1896)
14  libvlccore.5.dylib            	0x00000001000748a9 DecoderProcess + 393 (decoder.c:2015)
15  libvlccore.5.dylib            	0x0000000100074691 DecoderThread + 193 (decoder.c:941)
16  libsystem_c.dylib             	0x00007fff8ceea742 _pthread_start + 327
17  libsystem_c.dylib             	0x00007fff8ced7181 thread_start + 13

added Component::Interface: macOS Severity::major Type::bug Version::master git labels

changed milestone to %2.1.0 release

assigned to @dfuhrmann and unassigned @MigrationBot

added Component::Audio: filters + 1 deleted label and removed Component::Interface: macOS label

commit 68d7d122 Author: David Fuhrmann david.fuhrmann@googlemail.com Date: Wed Apr 3 14:15:38 2013 +0200

equalizer: fix crash and allow custom eq-band values without known preset

close [#8307](https://code.videolan.org/videolan/vlc/-/issues/8307)

Original author: david.fuhrmann@googlemail.com

added Status::fixed label

closed