Run clang-format against cpp (#4358)

Code/DistGeom/ChiralViolationContrib.cpp

@@ -115,4 +115,4 @@ void ChiralViolationContrib::getGrad(double *pos, double *grad) const {
        pos[d_idx3 * dim + 1] * (pos[d_idx1 * dim] - pos[d_idx2 * dim]));
   // std::cerr<<"Chiral Violation grad: "<<preFactor<<std::endl;
 }
-}
+}  // namespace DistGeom

Code/DistGeom/DistViolationContrib.cpp

@@ -94,4 +94,4 @@ void DistViolationContrib::getGrad(double *pos, double *grad) const {
     grad[dim * this->d_end2Idx + i] -= dGrad;
   }
 }
-}
+}  // namespace DistGeom

Code/DistGeom/TriangleSmooth.cpp

@@ -78,4 +78,4 @@ bool triangleSmoothBounds(BoundsMatrix *boundsMat, double tol) {
   }
   return true;
 }
-}
+}  // namespace DistGeom

Code/DistGeom/Wrap/DistGeom.cpp

@@ -171,7 +171,7 @@ PyObject *embedBoundsMatrix(python::object boundsMatArg, int maxIters = 10,
 
   return PyArray_Return(res);
 }
-}
+}  // namespace RDKit
 
 BOOST_PYTHON_MODULE(DistGeom) {
   python::scope().attr("__doc__") =