[pulseaudio-discuss] [pa-ucm] SIGABORT in ucm_get_modifiers

[sajeesh sidharthan]

Hello.

I have come across SIGABORT in pulse-ucm module.

SIGABORT
 happened due to freeing memory of uninitialized pointer in 
ucm_get_modifiers(). If modifier list count is 0, alsa-ucm doesnt return
 error and doesnt allocate memory for modifier list.

In ucm_get_modifiers, mod_list is uninitialized and this leads to 
freeing memory which is not allocated inside alsa-ucm, by calling 
snd_use_case_free_list().

Please let me know if I can checkin the code to fix the crash./Sajeesh
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