transport.c: help gcc 4.6.3 users by squelching compiler warning

To a human reader, it is quite obvious that cmp is assigned before
it is used, but gcc 4.6.3 that ships with Ubuntu 12.04 is among
those that do not get this right.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
Merge branch 'jc/color-diff-doc' into maint-1.8.1

The "--color=<when>" argument to the commands in the diff family
was described poorly.

* jc/color-diff-doc:
  diff-options: unconfuse description of --color
Merge branch 'wk/doc-pre-rebase' into maint-1.8.1

The arguments given to pre-rebase hook were not documented.

* wk/doc-pre-rebase:
  Documentation/githooks: Explain pre-rebase parameters
Merge branch 'nd/doc-index-format' into maint-1.8.1

The v4 index format was not documented.

* nd/doc-index-format:
  update-index: list supported idx versions and their features
  read-cache.c: use INDEX_FORMAT_{LB,UB} in verify_hdr()
  index-format.txt: mention of v4 is missing in some places
Merge branch 'gp/describe-match-uses-glob-pattern' into maint-1.8.1

The "--match=<pattern>" argument "git describe" takes uses glob
pattern but it wasn't obvious from the documentation.

* gp/describe-match-uses-glob-pattern:
  describe: Document --match pattern format
Merge branch 'dm/ni-maxhost-may-be-missing' into maint-1.8.1

Some sources failed to compile on systems that lack NI_MAXHOST in
their system header.

* dm/ni-maxhost-may-be-missing:
  git-compat-util.h: Provide missing netdb.h definitions
Merge branch 'tk/doc-filter-branch' into maint-1.8.1

Add an example use of "--env-filter" in "filter-branch"
documentation.

* tk/doc-filter-branch:
  Documentation: filter-branch env-filter example
  git-filter-branch.txt: clarify ident variables usage
Merge branch 'lf/bundle-verify-list-prereqs' into maint-1.8.1

"git bundle verify" did not say "records a complete history" for a
bundle that does not have any prerequisites.

* lf/bundle-verify-list-prereqs:
  bundle: Add colons to list headings in "verify"
  bundle: Fix "verify" output if history is complete
Merge branch 'maint-1.8.1' into maint

* maint-1.8.1:
  bundle: Add colons to list headings in "verify"
  bundle: Fix "verify" output if history is complete
  Documentation: filter-branch env-filter example
  git-filter-branch.txt: clarify ident variables usage
  git-compat-util.h: Provide missing netdb.h definitions
  describe: Document --match pattern format
  Documentation/githooks: Explain pre-rebase parameters
  update-index: list supported idx versions and their features
  diff-options: unconfuse description of --color
  read-cache.c: use INDEX_FORMAT_{LB,UB} in verify_hdr()
  index-format.txt: mention of v4 is missing in some places
Merge branch 'jk/graph-c-expose-symbols-for-cgit' into maint

In the v1.8.0 era, we changed symbols that do not have to be global
to file scope static, but a few functions in graph.c were used by
CGit from sideways bypassing the entry points of the API the
in-tree users use.

* jk/graph-c-expose-symbols-for-cgit:
  Revert "graph.c: mark private file-scope symbols as static"
Start preparing for 1.8.2.1

... at the same time, preparation for 1.8.1.6 also has started ;-)

Signed-off-by: Junio C Hamano <gitster@pobox.com>