issue with parsing terenaries in lists

[Absolucy]

This successfully compiles in BYOND:

/proc/cat()
    return list(
        "mrrp" = 0 ? null :
            "mrrrp mrrrow"
    )

but fails to compile with OpenDream (545cd48):

❯ DMCompiler demo.dme
Compiling demo.dme on 516.1655
Error OD0001 at demo.dm:4:13: Expected ')'
Error OD0001 at demo.dm:4:13: Expected end of proc statement
Error OD0001 at demo.dm:5:5: Expected end of proc statement
Compilation failed with 3 errors and 0 warnings
Total time: 00:00