Out-of-bounds write when managing voice groups

[TechPizzaDev]

This code seems to write a zero outside of the allocated memory for the voice group when on the last index.
A possible solution here would be to overallocate one more element for voice groups:

soloud/src/core/soloud_core_voicegroup.cpp

Line 139 in 1157475

mVoiceGroup[c][i + 1] = 0;

Another interesting write occurs when trimming a group, which can possibly erase the last voice in a group.
Not sure of a solution on this one. Maybe just removing it would be enough:

soloud/src/core/soloud_core_voicegroup.cpp

Line 236 in 1157475

mVoiceGroup[c][mVoiceGroup[c][0] - 1] = 0;