event_create(): check malloc() return value to be non-NULL (#1084)

event_create(): check malloc() return value to be non-NULL (#1084)

* event_create(): check malloc() to be non-NULL

Check malloc() to return non-NULL before writing data
in the function event_create().

Signed-off-by: Florian La Roche <Florian.LaRoche@gmail.com>
* Code review suggestion

Signed-off-by: Gaurav Aggarwal <aggarg@amazon.com>
---------

Signed-off-by: Florian La Roche <Florian.LaRoche@gmail.com>
Signed-off-by: Gaurav Aggarwal <aggarg@amazon.com>
Co-authored-by: Gaurav-Aggarwal-AWS <33462878+aggarg@users.noreply.github.com>
Co-authored-by: Gaurav Aggarwal <aggarg@amazon.com>