fix import typo which may introduce compilation error
fix import typo which may introduce compilation error

tiennou/objective-git,dleehr/objective-git,blackpixel/objective-git,blackpixel/objective-git,libgit2/objective-git,blackpixel/objective-git,phatblat/objective-git,phatblat/objective-git,alehed/objective-git,libgit2/objective-git,libgit2/objective-git,alehed/objective-git,blackpixel/objective-git,tiennou/objective-git,phatblat/objective-git,libgit2/objective-git,dleehr/objective-git,tiennou/objective-git,dleehr/objective-git,alehed/objective-git,dleehr/objective-git