[svn] Small C++ lexer fix.
[svn] Small C++ lexer fix.

spencerlyon2/pygments,spencerlyon2/pygments,tomstuart/pygments,tomstuart/pygments,tomstuart/pygments,erickt/pygments,erickt/pygments,erickt/pygments,spencerlyon2/pygments,tomstuart/pygments,tomstuart/pygments,tomstuart/pygments,spencerlyon2/pygments,spencerlyon2/pygments,tomstuart/pygments,spencerlyon2/pygments,erickt/pygments,tomstuart/pygments,spencerlyon2/pygments,spencerlyon2/pygments,erickt/pygments,tomstuart/pygments,erickt/pygments,erickt/pygments,spencerlyon2/pygments,tomstuart/pygments,tomstuart/pygments,spencerlyon2/pygments,tomstuart/pygments,spencerlyon2/pygments,tomstuart/pygments,tomstuart/pygments,erickt/pygments,erickt/pygments,spencerlyon2/pygments,spencerlyon2/pygments,spencerlyon2/pygments,tomstuart/pygments,erickt/pygments,erickt/pygments,spencerlyon2/pygments,spencerlyon2/pygments,spencerlyon2/pygments,spencerlyon2/pygments,erickt/pygments