residual: improve text object resource handling
|Reported by:||SF/mannythegnome||Owned by:||aquadran|
The attached patch ensures that the resources associated with a killed text object are destroyed (i.e. the bitmap) which prevents residual from becoming a resource hog in the main menu.
I'm not sure whether the delete statement is appropriate at that place, and I don't know enough CPP to judge whether the remove statement is superfluous, i.e. whether the delete statement implies removal from lists.
The patch also removes the TextObjectExists statement from BlastText(), which IMHO isn't neccessary (the object will be destroyed right after it was drawn).
Ticket imported from: #1495487. Ticket imported from: patches/642.