chmod: recursive mode returns exit code 0 even when some files fail (last-file-wins)

In Chmoder::chmod the recursive branch overwrites the running result instead of accumulating it, so the exit code reflects only the last file processed: if self.recursive r = self.walkdirwithcontextfile, true; // overwrites r else r = self.chmodfilefile.andr; PoC: GNU returns 1 when a file fails;...