ContainerFindIncludes: Add some temporary variables

This slightly cleans up a function call.

Signed-off-by: Matthijs Kooijman <matthijs@stdin.nl>

container_find_includes.go

@@ -292,6 +292,8 @@ func writeCache(cache *includeCache, path string) error {
 
 func findIncludesUntilDone(ctx *types.Context, cache *includeCache, sourceFile types.SourceFile) error {
 	sourcePath := sourceFile.SourcePath(ctx)
+	depPath := sourceFile.DepfilePath(ctx)
+	objPath := sourceFile.ObjectPath(ctx)
 	targetFilePath := utils.NULLFile()
 
 	// TODO: This should perhaps also compare against the
@@ -306,7 +308,7 @@ func findIncludesUntilDone(ctx *types.Context, cache *includeCache, sourceFile t
 	// TODO: This reads the dependency file, but the actual building
 	// does it again. Should the result be somehow cached? Perhaps
 	// remove the object file if it is found to be stale?
-	unchanged, err := builder_utils.ObjFileIsUpToDate(ctx, sourcePath, sourceFile.ObjectPath(ctx), sourceFile.DepfilePath(ctx))
+	unchanged, err := builder_utils.ObjFileIsUpToDate(ctx, sourcePath, objPath, depPath)
 	if err != nil {
 		return i18n.WrapError(err)
 	}