fix optional-presence comparison

compiler_tests.odin

@@ -13822,6 +13822,7 @@ enum_field_struct_and_contextual_anonymous_records_compile_and_run :: proc(t: ^t
 	main_path := "/tmp/brolang-test-enum-field-struct/main.bro"
 	output := "/tmp/brolang-test-enum-field-struct-output"
 	text := `meta :: import "@std/meta"
+testing :: import "@std/testing"
 
 TokenKind :: enum(u8) {
 	ident = 3
@@ -13854,6 +13855,8 @@ Generated func($T type) type {
 
 GeneratedInt :: alias Generated(i32)
 ordered Names = {}
+static_none ?i32 :: none
+static_some ?i32 :: 1
 
 Map func($E, $V type) type {
 	match typeinfo!(E) {
@@ -13894,6 +13897,8 @@ get func($E, $V type, map @Map(E, V), key E) ?V {
 
 main func() i32 {
 	_ = ordered
+	if !$(static_none == none) or !$(none == static_none) or
+	   $(static_some == none) or $(none == static_some) { return 23 }
 	inferred :: {x = 40, name = "bro"}
 	if inferred.x != 40 or inferred.name.len != 3 { return 1 }
 	direct Direct = {x = 7}
@@ -13937,10 +13942,17 @@ main func() i32 {
 	})
 	if !map.present[0] or !map.present[1] or map.present[2] { return 9 }
 	if map.values[0].len != 10 or map.values[1].len != 7 { return 18 }
-	if get(TokenKind, []u8, &map, TokenKind.ident) |value| {
+	ident :: get(TokenKind, []u8, &map, TokenKind.ident)
+	if ident == none or none == ident { return 19 }
+	if ident |value| {
 		if value.len != 10 { return 19 }
 	} else { return 20 }
-	if get(TokenKind, []u8, &map, TokenKind.eof) |_| { return 21 }
+	eof :: get(TokenKind, []u8, &map, TokenKind.eof)
+	if eof != none or none != eof { return 21 }
+	location testing.SourceLocation = {file = "test.bro", line = 1, column = 1}
+	testing.expect_equal(none, eof, location) catch |_| { return 24 }
+	testing.expect_equal(ident, ident, location) catch |_| { return 25 }
+	if eof |_| { return 22 }
 	return 0
 }
 `