Fix #730 - Lint files on save even when nothing was fixed

autoload/ale/fix.vim

@@ -77,15 +77,15 @@ function! ale#fix#ApplyFixes(buffer, output) abort
             echoerr 'The file was changed before fixing finished'
             return
         endif
-
-        let l:data.done = 1
     endif
 
     if !bufexists(a:buffer)
         " Remove the buffer data when it doesn't exist.
         call remove(g:ale_fix_buffer_data, a:buffer)
     endif
 
+    let l:data.done = 1
+
     " We can only change the lines of a buffer which is currently open,
     " so try and apply the fixes to the current buffer.
     call ale#fix#ApplyQueuedFixes()

test/test_ale_fix.vader

@@ -86,6 +86,8 @@ After:
     call delete('fix_test_file')
   endif
 
+  call setloclist(0, [])
+
   let g:ale_fix_buffer_data = {}
 
 Given testft (A file with three lines):
@@ -305,6 +307,38 @@ Expect(The buffer should be the same):
   b
   c
 
+Execute(ALEFix should still lint when nothing was fixed on save):
+  let g:ale_fix_on_save = 1
+  let g:ale_lint_on_save = 1
+  let g:ale_enabled = 1
+
+  noautocmd silent file fix_test_file
+
+  let g:ale_fixers.testft = ['DoNothing']
+
+  call SetUpLinters()
+  call ale#events#SaveEvent()
+
+  Assert !filereadable('fix_test_file'), 'The file should not have been saved'
+
+  " We have run the linter.
+  AssertEqual [{
+  \   'bufnr': bufnr('%'),
+  \   'lnum': 1,
+  \   'vcol': 0,
+  \   'col': 1,
+  \   'text': 'xxx',
+  \   'type': 'E',
+  \   'nr': -1,
+  \   'pattern': '',
+  \   'valid': 1,
+  \}], getloclist(0)
+
+Expect(The buffer should be the same):
+  a
+  b
+  c
+
 Given testft (A file with three lines):
   a
   b