Undo bug workaround

Reason: doesn't work as a workaround

init.lua

@@ -5,15 +5,13 @@ local function load(name)
 end
 
 -- Load HTTP privileges
-local function get_api()
-    local http_api = minetest.request_http_api and minetest.request_http_api()
-    if http_api == nil then
-        error(
-            "This mod has no access to HTTP requests - which is crucial for it "..
-            "to relay messages to Matrix. Please enable it at the "..
-            "`secure.http_mods` or the `secure.trusted_mods` settings!"
-        )
-    end
+local http_api = minetest.request_http_api and minetest.request_http_api()
+if http_api == nil then
+    error(
+        "This mod has no access to HTTP requests - which is crucial for it "..
+        "to relay messages to Matrix. Please enable it at the "..
+        "`secure.http_mods` or the `secure.trusted_mods` settings!"
+    )
 end
 
 -- Load standard configuration
@@ -32,24 +30,24 @@ load("lua/send")
 load("lua/sync")
 
 -- Mod Minetest server
-minetest.register_on_chat_message(matrix.say(get_api()))
+minetest.register_on_chat_message(matrix.say(http_api))
 minetest.register_on_joinplayer(function(ObjectRef, last_login)
     local name = ObjectRef:get_player_name()
-    matrix.send(get_api(), name .. " has joined the Minetest server")
+    matrix.send(http_api, name .. " has joined the Minetest server")
 end)
 minetest.register_on_leaveplayer(function(ObjectRef, timed_out)
     local name = ObjectRef:get_player_name()
-    matrix.send(get_api(), name .. " has left the Minetest server")
+    matrix.send(http_api, name .. " has left the Minetest server")
 end)
 minetest.register_on_dieplayer(function(ObjectRef, reason)
     local name = ObjectRef:get_player_name()
-    matrix.send(get_api(), name .. " has died! Reason:", reason)
+    matrix.send(http_api, name .. " has died! Reason:", reason)
 end)
 
 -- Start Matrix sync
 local names = {}
 
-matrix.sync_forever(get_api(), function(event)
+matrix.sync_forever(http_api, function(event)
     local name = names[event.sender] or event.sender
     
     if event.type == nil then