Add @(require_results) everywhere in os2

core/os/os2/env.odin

@@ -6,6 +6,7 @@ import "base:runtime"
 // It returns the value, which will be empty if the variable is not present
 // To distinguish between an empty value and an unset value, use lookup_env
 // NOTE: the value will be allocated with the supplied allocator
+@(require_results)
 get_env :: proc(key: string, allocator: runtime.Allocator) -> string {
 	value, _ := lookup_env(key, allocator)
 	return value
@@ -15,6 +16,7 @@ get_env :: proc(key: string, allocator: runtime.Allocator) -> string {
 // If the variable is found in the environment the value (which can be empty) is returned and the boolean is true
 // Otherwise the returned value will be empty and the boolean will be false
 // NOTE: the value will be allocated with the supplied allocator
+@(require_results)
 lookup_env :: proc(key: string, allocator: runtime.Allocator) -> (value: string, found: bool) {
 	return _lookup_env(key, allocator)
 }
@@ -38,6 +40,7 @@ clear_env :: proc() {
 
 // environ returns a copy of strings representing the environment, in the form "key=value"
 // NOTE: the slice of strings and the strings with be allocated using the supplied allocator
+@(require_results)
 environ :: proc(allocator: runtime.Allocator) -> []string {
 	return _environ(allocator)
 }