[BUG] Select multiple results in brace-expansion context cause zsh crash

[Aloxaf]

This bug was introduced in 6685da3fad7decf4536314e37c081146f5c132cb, which fixed the bug below:

zstyle ':completion:*' matcher-list '' 'm:{[:lower:]-}={[:upper:]_}' 'r:|[.,_-]=* r:|=*' 'r:|.=* r:|=*'
touch a-b-c
rg -\t # The file "a-b-c" will also appear in reuslts

Crash point: https://github.com/zsh-users/zsh/blob/dd50f125b5eb65896642d2ff664adefd33f1004c/Src/Zle/compresult.c#L1320