Front characters stripped from process name

[paulmenzel]

With systemd-bootchart 233-2 from Debian Sid/unstable, process names in parentheses sometimes get their start characters stripped.

For systemctl:

<!-- (ystemctl) [224] ppid=212 runtime=2.336ms -->
  <rect class="ps" x="279.993" y="1740.000" width="0.000" height="20.000" />
    <rect class="wait" x="279.993" y="1740.000" width="0.000" height="20.000" />
    <rect class="cpu" x="279.993" y="1740.000" width="0.000" height="20.000" />
  <text x="284.993" y="1754.000"><![CDATA[(ystemctl)]]> [224]<tspan class="run">2.3ms</tspan> </text>
  <line class="dot" x1="279.993" y1="1750.000" x2="251.807" y2="1750.000" />
  <line class="dot" x1="251.807" y1="1750.000" x2="251.807" y2="1600.000" />

e2scrub becomes crub. But direxec seems fine.