bump mrunalp/fileutils 7d4729fb36185a7c1719923406c9d40e54fb93c7

no significant changes, other than some linting fixes

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

vendor/github.com/mrunalp/fileutils/README.md

@@ -2,4 +2,4 @@
 
 Collection of utilities for file manipulation in golang
 
-The library is based on docker pkg/archive but does copies instead of handling archive formats.
+The library is based on docker pkg/archive pkg/idtools but does copies instead of handling archive formats.

vendor/github.com/mrunalp/fileutils/fileutils.go

@@ -139,19 +139,16 @@ func CopyDirectory(source string, dest string) error {
 			return nil
 		}
 
-		// Copy the file.
-		if err := CopyFile(path, filepath.Join(dest, relPath)); err != nil {
-			return err
-		}
-
-		return nil
+		return CopyFile(path, filepath.Join(dest, relPath))
 	})
 }
 
+// Gives a number indicating the device driver to be used to access the passed device
 func major(device uint64) uint64 {
 	return (device >> 8) & 0xfff
 }
 
+// Gives a number that serves as a flag to the device driver for the passed device
 func minor(device uint64) uint64 {
 	return (device & 0xff) | ((device >> 12) & 0xfff00)
 }