Outdent line after an anon func argument

Fix anonymous function argument causes following line to be incorrectly
indented.

Add tests:

indented chained functions:
    worked before and still works
indented chained anonymous function arguments:
    broken before and now works

Author: idbrii

indent/lua.vim

@@ -120,6 +120,11 @@ function GetLuaIndent()
     let i = -1
   endif
 
+  " special case: end}) -- line after end of call w/ anon func should outdent again
+  if i >= 0 && contents_prev =~# s:anon_func_end
+    let i -= 1
+  endif
+
   " restore cursor
   call setpos(".", original_cursor_pos)
 

test/indent.vader

@@ -0,0 +1,53 @@
+Before:
+  setlocal expandtab shiftwidth=4 tabstop=4
+
+Given lua (chained functions):
+  if true then
+      local data = self.kitchen
+          :getCheese()
+          :enjoyCheese(self
+          :getHead()
+          :getMouth())
+          end
+
+Do (reindent):
+  gg=G
+
+Expect lua (indented):
+  if true then
+      local data = self.kitchen
+          :getCheese()
+          :enjoyCheese(self
+              :getHead()
+              :getMouth())
+  end
+
+Given lua (chained anonymous function arguments):
+  if false then
+  local data = self.kitchen
+      :eatCheese({fn = function()
+          return 10
+      end})
+          :digestCheese(function()
+              return 1
+          end)
+
+          self:Func()
+      end
+
+Do (reindent):
+  gg=G
+
+Expect lua (indented):
+  if false then
+      local data = self.kitchen
+          :eatCheese({fn = function()
+              return 10
+          end})
+          :digestCheese(function()
+              return 1
+          end)
+
+      self:Func()
+  end
+