Keep `-vet` happy

core/odin/parser/file_tags.odin

@@ -41,8 +41,8 @@ get_build_os_from_string :: proc(str: string) -> (found_os: runtime.Odin_OS_Type
 		}
 	}
 	if str_subtarget != "" {
-		fields := reflect.enum_fields_zipped(runtime.Odin_Platform_Subtarget_Type)
-		for subtarget in fields {
+		st_fields := reflect.enum_fields_zipped(runtime.Odin_Platform_Subtarget_Type)
+		for subtarget in st_fields {
 			if strings.equal_fold(subtarget.name, str_subtarget) {
 				found_subtarget = runtime.Odin_Platform_Subtarget_Type(subtarget.value)
 				break