Update error handling for os2 on windows

core/os/os2/temp_file.odin

@@ -1,14 +1,15 @@
 package os2
 
+import "core:runtime"
 
 create_temp :: proc(dir, pattern: string) -> (^File, Error) {
 	return _create_temp(dir, pattern)
 }
 
-mkdir_temp :: proc(dir, pattern: string, allocator := context.allocator) -> (string, Error) {
-	return _mkdir_temp(dir, pattern)
+mkdir_temp :: proc(dir, pattern: string, allocator: runtime.Allocator) -> (string, Error) {
+	return _mkdir_temp(dir, pattern, allocator)
 }
 
-temp_dir :: proc(allocator := context.allocator) -> string {
+temp_dir :: proc(allocator: runtime.Allocator) -> string {
 	return _temp_dir(allocator)
 }