Git compile warnings (under mac/clang)

These are probably minor, I only bring them up because Git's build is generally so quiet that it might be worth squashing these too.

    CC fsck.o
fsck.c:110:38: warning: comparison of unsigned enum expression >= 0 is
always true [-Wtautological-compare]
        if (options->msg_severity && msg_id >= 0 && msg_id < FSCK_MSG_MAX)
                                     ~~~~~~ ^  ~
1 warning generated.
    AR libgit.a
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ranlib:
file: libgit.a(gettext.o) has no symbols
    CC builtin/remote.o
builtin/remote.c:1572:5: warning: add explicit braces to avoid
dangling else [-Wdangling-else]
                                else
                                ^
builtin/remote.c:1580:5: warning: add explicit braces to avoid
dangling else [-Wdangling-else]
                                else
                                ^
2 warnings generated.

(the warning about libgit.a(gettext.o) is probably because I'm building with NO_GETTEXT -- I've never been able to get gettext to work on my mac)