The git-send-email.perl file does have use Git::LoadCPAN::Mail::Address and since you do NO_PERL_CPAN_FALLBACKS trying to use it throws the following error explaining that the system is broken:
> BUG: The 'Mail::Address' module is not here, but NO_PERL_CPAN_FALLBACKS was > set! > > Git needs this Perl module from the CPAN, and will by default ship > with a copy of it. This Git was built with NO_PERL_CPAN_FALLBACKS, > meaning that whoever built it promised to provide this module. > > You're seeing this error because they broke that promise, and we can't > load our fallback version, since we were asked not to install it. > > If you're seeing this error and didn't package Git yourself the > package you're using is broken, or your system is broken. This error > won't appear if Git is built without NO_PERL_CPAN_FALLBACKS (instead > we'll use our fallback version of the module). at > /usr/share/perl5/Git/LoadCPAN.pm line 76. > BEGIN failed--compilation aborted at > /usr/share/perl5/Git/LoadCPAN/Mail/Address.pm line 8. > Compilation failed in require at /usr/lib/git-core/git-send-email line 37. > BEGIN failed--compilation aborted at /usr/lib/git-core/git-send-email line 37. > diff: actual: No such file or directory -- Felipe Contreras