Add missing exception handling.

Author: Diptorup Deb

dpctl-capi/source/dpctl_sycl_platform_interface.cpp

@@ -84,6 +84,9 @@ __dpctl_give DPCTLSyclPlatformRef DPCTLPlatform_CreateFromSelector(
             PRef = wrap(P);
         } catch (std::bad_alloc const &ba) {
             std::cerr << ba.what() << '\n';
+        } catch (runtime_error const &re) {
+            std::cerr << re.what() << '\n';
+            return nullptr;
         }
     }
     else {

dpctl-capi/source/dpctl_sycl_queue_manager.cpp

@@ -64,6 +64,8 @@ struct QueueManager
                 delete unwrap(CRef);
             } catch (std::bad_alloc const &ba) {
                 std::cerr << ba.what() << '\n';
+            } catch (runtime_error const &re) {
+                std::cerr << re.what() << '\n';
             }
 
             return qs;