fix: close pipe when actions error

Fix
#1901 (reply in thread).

If pipe is not closed, terminal won't response and refresh unless we
press a ctrl-c

Author: phanen

lua/fzf-lua/shell.lua

@@ -113,7 +113,7 @@ end
 
 function M.raw_action(fn, fzf_field_expression, debug)
   local receiving_function = function(pipe, ...)
-    local ret = fn(...)
+    local ok, ret = pcall(fn, ...)
 
     local on_complete = function(_)
       -- We are NOT asserting, in case fzf closes
@@ -122,6 +122,9 @@ function M.raw_action(fn, fzf_field_expression, debug)
       uv.close(pipe)
     end
 
+    -- pipe must be closed, otherwise terminal will freeze
+    if not ok then on_complete() end
+
     if type(ret) == "string" then
       uv.write(pipe, ret, on_complete)
     elseif type(ret) == nil then