Attempt to fix bogus gcc -Wall warnings reported by Marc-Andre Lemburg,
by making the DUP_TOPX code utterly straightforward. This also gets rid of all normal-case internal DUP_TOPX if/branches, and allows replacing one POP() with TOP() in each case, so is a good idea regardless.
T
Tim Peters committed
35ba689caba292bbe5093026eaab43957992c089
Parent: 5428c7d