Merge pull request #2319 from idbrii/lsp-hide-when-nothing

Return nothing when there is no lsp-progress

autoload/airline/extensions/lsp.vim

@@ -80,9 +80,9 @@ function! airline#extensions#lsp#progress() abort
         let message = airline#util#shorten(s:lsp_progress['message'] . percent, 91, 9)
         return s:lsp_progress['server'] . ':' . s:title . ' ' . message
       endif
+    endif
+  endif
   return ''
-    endif
-  endif
 endfunction
 
 let s:timer = 0