autoload/magit/state.vim: cd top dir when looking for file state

autoload/magit/state.vim

@@ -88,6 +88,9 @@ endfunction
 " param[in] status: one character status code of the file (AMDRCU?)
 " param[in] filename: filename
 function! magit#state#add_file(mode, status, filename) dict
+	let dir = getcwd()
+	try
+		call magit#utils#lcd(magit#utils#top_dir())
 		let dev_null = ( a:status == '?' ) ? " /dev/null " : " "
 		let staged_flag = ( a:mode == 'staged' ) ? " --staged " : " "
 		let diff_cmd="git diff --no-ext-diff " . staged_flag .
@@ -135,6 +138,9 @@ function! magit#state#add_file(mode, status, filename) dict
 				call add(hunk.lines, diff_line)
 			endfor
 		endif
+	finally
+		call magit#utils#lcd(dir)
+	endtry
 endfunction
 
 " magit#state#update: update self.dict

autoload/magit/utils.vim

@@ -36,6 +36,10 @@ endfunction
 " s:magit_cd_cmd: plugin variable to choose lcd/cd command, 'lcd' if exists,
 " 'cd' otherwise
 let s:magit_cd_cmd = exists('*haslocaldir') && haslocaldir() ? 'lcd ' : 'cd '
+" magit#utils#lcd: helper function to lcd. use cd if lcd doesn't exists
+function! magit#utils#lcd(dir)
+	execute s:magit_cd_cmd . a:dir
+endfunction
 
 " magit#utils#system: wrapper for system, which only takes String as input in vim,
 " although it can take String or List input in neovim.