[Cuda] Reintroduce catching and reporting of bad_alloc for event obje…

…ct creation

Reintroduces the changes from commit c4ae460, which were reverted
in related merged commit 1b4a8b8 due to being mistakenly deleted
and omitted on rebasing.

source/adapters/cuda/event.cpp

@@ -290,8 +290,17 @@ UR_APIEXPORT ur_result_t UR_APICALL urEventCreateWithNativeHandle(
 
   std::unique_ptr<ur_event_handle_t_> EventPtr{nullptr};
 
-  *phEvent = ur_event_handle_t_::makeWithNative(
-      hContext, reinterpret_cast<CUevent>(hNativeEvent));
+  try {
+    EventPtr =
+        std::unique_ptr<ur_event_handle_t_>(ur_event_handle_t_::makeWithNative(
+            hContext, reinterpret_cast<CUevent>(hNativeEvent)));
+  } catch (const std::bad_alloc &) {
+    return UR_RESULT_ERROR_OUT_OF_HOST_MEMORY;
+  } catch (...) {
+    return UR_RESULT_ERROR_UNKNOWN;
+  }
+
+  *phEvent = EventPtr.release();
 
   return UR_RESULT_SUCCESS;
 }