[PATCH 00/11] coverity: avoid dereferencing NULL

["Johannes Schindelin via GitGitGadget" <gitgitgadget@gmail.com>]

This is a continuation of the effort I started in the patch series that
became js/coverity-fixes. This next batch adds guards to avoid dereferencing
NULL pointers and accessing NULL file descriptors.

Johannes Schindelin (11):
  diffcore-break: guard against NULLed queue entries in merge loop
  diff: handle NULL return from repo_get_commit_tree()
  remote: guard `remote_tracking()` against NULL remote
  reftable/stack: guard against NULL list_file in stack_destroy
  mailsplit: move NULL check before first use of file handle
  bisect: handle NULL commit in `bisect_successful()`
  replay: die when --onto does not peel to a commit
  revision: avoid dereferencing NULL in `add_parents_only()`
  pack-bitmap: handle missing bitmap for base MIDX
  bisect: ensure non-NULL `head` before using it
  shallow: fix NULL dereference

 builtin/bisect.c    |  9 ++++++++-
 builtin/diff.c      | 10 +++++++---
 builtin/mailsplit.c |  6 +++---
 diffcore-break.c    |  2 ++
 pack-bitmap.c       |  4 ++++
 reftable/stack.c    |  3 ++-
 remote.c            |  2 ++
 replay.c            |  8 ++++++--
 revision.c          |  9 +++++++--
 shallow.c           |  2 +-
 10 files changed, 42 insertions(+), 13 deletions(-)


base-commit: e9019fcafe0040228b8631c30f97ae1adb61bcdc
Published-As: https://github.com/gitgitgadget/git/releases/tag/pr-2174%2Fdscho%2Fcoverity-fixes-null-safety-v1
Fetch-It-Via: git fetch https://github.com/gitgitgadget/git pr-2174/dscho/coverity-fixes-null-safety-v1
Pull-Request: https://github.com/gitgitgadget/git/pull/2174
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