BUG/MINOR: mux_h2: missing space between "st" and ".flg" in the "show fd" helper

That was causing confusing outputs like this one whenan H2S is known:

   1030 : ... last_h2s=0x2ed8390 .id=775 .st=HCR.flg=0x4001 .rxbuf=...
                                                ^^^^

This was introduced by commit ab2ec4540 in 2.1-dev2 so the fix can be
backported as far as 2.1.
1 file changed