css variable without end semicolon get a compiler error

[ShuZhong]

To reproduce:

.test {
    --test-var2: 0.4
}

Current behavior:
error Unrecognised input. Possibly missing opening '{'

Expected behavior:
compiler success

Environment information:

• less version: 4.1.2
• nodejs version: 16
• operating system: windows

Can be reproduce in http://lesscss.org/less-preview/

[iChenLei]

Thanks for bug reporting.

[matthew-dean]

Is this only true for custom props?