Changed : A[i,k] to A[i][k]

Caught from the following warning:
In file included from IK_QChain.h:47,
                 from IK_QChain.cpp:44:
TNT/cmat.h: In function `void TNT::matmultdiag(TNT::Matrix<T>&, const TNT::Matri
x<T>&, const TNT::Vector<T>&)':
TNT/cmat.h:593: warning: left-hand operand of comma has no effect

Kent

intern/iksolver/intern/TNT/cmat.h

@@ -590,7 +590,7 @@ inline void matmultdiag(
     for (Subscript i=0; i<M; i++) {
 		for (Subscript k=0; k<K; k++)
 		{
-			C[i][k] = A[i,k] * diag[k];		
+			C[i][k] = A[i][k] * diag[k];		
 		}
 	}
 }