filelist/modules: fix order of struct items to reduce memory

Another one found by fieldalignment:
        modules.go:18:14: struct with 32 pointer bytes could be 24

Probably not going to matter much... but let's just get rid of the
warning.

internal/filelist/modules/modules.go

@@ -16,8 +16,8 @@ import (
 )
 
 type Modules struct {
-	modulesList     []string
 	modulesListPath string
+	modulesList     []string
 }
 
 // New returns a new Modules that will use the given moduleto provide a list