Typo in timercmp comment
#ifndef timercmp
/** Replacement for timersub on platforms that do not have it: returns true
* iff the relational operator "op" makes the expression tv1 op tv2 true.
#ifndef timercmp
/** Replacement for timersub on platforms that do not have it: returns true
* iff the relational operator "op" makes the expression tv1 op tv2 true.