fix regression with ctrlp statusline not changing.

autoload/airline/init.vim

@@ -67,8 +67,6 @@ function! airline#init#bootstrap()
   call airline#parts#define_raw('file', '%f%m')
   call airline#parts#define_raw('ffenc', '%{printf("%s%s",&fenc,strlen(&ff)>0?"[".&ff."]":"")}')
   call airline#parts#define_empty(['hunks', 'branch', 'tagbar', 'syntastic'])
-
-  call airline#extensions#load()
 endfunction
 
 function! airline#init#sections()

plugin/airline.vim

@@ -15,6 +15,7 @@ function! s:init()
     let s:airline_initialized = 1
 
     call airline#init#bootstrap()
+    call airline#extensions#load()
     call airline#init#sections()
 
     let s:airline_theme_defined = exists('g:airline_theme')

t/commands.vim

@@ -12,6 +12,7 @@ describe 'commands'
   end
 
   it 'should toggle whitespace off and on'
+    call airline#extensions#load()
     execute 'AirlineToggleWhitespace'
     Expect exists('#airline_whitespace') to_be_false
     execute 'AirlineToggleWhitespace'

t/section.vim

@@ -1,4 +1,5 @@
 call airline#init#bootstrap()
+call airline#extensions#load()
 
 function! SectionSpec()
 endfunction