lapack throws a std::exception not a runtime_error

This catch was being ignored when cholesky_solve fails

Author: kmp5VT

src/TiledArray/math/solvers/cp/cp.h

@@ -314,7 +314,7 @@ class CP {
     // MtKRP);
     try {
       MtKRP = math::linalg::cholesky_solve(W, MtKRP);
-    } catch (std::runtime_error& ex) {
+    } catch (std::exception& ex){
       // if W is near-singular try LU instead of Cholesky
       if (std::string(ex.what()).find("lapack::posv failed") !=
           std::string::npos) {