random.tcc (piecewise_linear_distribution<>:: operator()(_UniformRandomNumberGenerator&, const param_type&)): Remove spurious closed parenthesis.

2009-04-05  Paolo Carlini  <paolo.carlini@oracle.com>

	* include/bits/random.tcc (piecewise_linear_distribution<>::
	operator()(_UniformRandomNumberGenerator&, const param_type&)):
	Remove spurious closed parenthesis.

From-SVN: r145575