fix

Author: sumneko

script/vm/value.lua

@@ -9,6 +9,9 @@ function vm.testCondition(source)
         return nil
     end
     local node = vm.compileNode(source)
+    if node.optional then
+        return nil
+    end
     local hasTrue, hasFalse
     for n in node:eachObject() do
         if n.type == 'boolean'

test/type_inference/init.lua

@@ -3209,3 +3209,12 @@ local n
 
 print(<?n?>)
 ]]
+
+TEST 'integer' [[
+---@type integer?
+local n
+if true then
+    n = 0
+end
+local <?x?> = n or 0
+]]