pass tests

Author: sumneko

test/diagnostics/common.lua

@@ -490,7 +490,9 @@ _G.bb = 1
 
 TEST [[
 local f = load('')
-f(1, 2, 3)
+if f then
+    f(1, 2, 3)
+end
 ]]
 
 TEST [[

test/hover/init.lua

@@ -280,8 +280,8 @@ TEST [[
 ]]
 [=[
 function load(chunk: string|function, chunkname?: string, mode?: "b"|"bt"|"t", env?: table)
-  -> function
-  2. error_message: string
+  -> function?
+  2. error_message: string?
 ]=]
 
 TEST [[