Remove a branch that is never taken from where.c.
Improved EXPLAIN indentation of a loop in the ANALYZE logic for STAT4.
Mark the not-found jump of a seek operation in that loop as never taken.
Do not run corruptH.test in mmap mode.
Avoid calling sqlite3OsDelete() on a file that is open, since this causes Windows to run *very* slowly.  Comes up on error recovery in journal_mode=PERSIST.
Revise change from the previous check-in to clarify the situation when handling open journal files, regardless of journal mode.