video_filter/blendbench: crash on malformed-parameters
vlc-devel --asan media.mkv --video-filter='blendbench{base-chroma=X}' -Idummy
ERROR: AddressSanitizer: heap-buffer-overflow on address 0x60200006c032 at pc 0x7f49a2e5104b bp 0x7f49a8c450c0 sp 0x7f49a8c450b0
READ of size 1 at 0x60200006c032 thread T14
[#0](https://code.videolan.org/videolan/vlc/-/issues/0) 0x7f49a2e5104a in Create modules/video_filter/blendbench.c:180
[#1](https://code.videolan.org/videolan/vlc/-/issues/1) 0x7f49e6b69bd9 in generic_start src/modules/modules.c:349
[#2](https://code.videolan.org/videolan/vlc/-/issues/2) 0x7f49e6b69daa in module_load src/modules/modules.c:183
[#3](https://code.videolan.org/videolan/vlc/-/issues/3) 0x7f49e6b6a942 in vlc_module_load src/modules/modules.c:275
[#4](https://code.videolan.org/videolan/vlc/-/issues/4) 0x7f49e6b6b122 in module_need src/modules/modules.c:364
[#5](https://code.videolan.org/videolan/vlc/-/issues/5) 0x7f49e6c69ad9 in filter_chain_AppendInner src/misc/filter_chain.c:214
[#6](https://code.videolan.org/videolan/vlc/-/issues/6) 0x7f49e6c6a3ae in filter_chain_AppendFilter src/misc/filter_chain.c:262
[#7](https://code.videolan.org/videolan/vlc/-/issues/7) 0x7f49e6c160d0 in ThreadChangeFilters src/video_output/video_output.c:753
[#8](https://code.videolan.org/videolan/vlc/-/issues/8) 0x7f49e6c197c7 in ThreadControl src/video_output/video_output.c:1557
[#9](https://code.videolan.org/videolan/vlc/-/issues/9) 0x7f49e6c197c7 in Thread src/video_output/video_output.c:1648
[#10](https://code.videolan.org/videolan/vlc/-/issues/10) 0x7f49e5d112e6 in start_thread (/usr/lib/libpthread.so.0+0x72e6)
[#11](https://code.videolan.org/videolan/vlc/-/issues/11) 0x7f49e5a5254e in clone (/usr/lib/libc.so.6+0xec54e)