WaE: possible problem detected in invocation of delete operator
WaE: possible problem detected in invocation of delete operator

'pOPO' has incomplete type (forward declaration). So include the header that
defines its class then.

Change-Id: Id375ff530ffadddbbae8aa7c01bcb2ae7b1ffcd9

JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core