Fix bogus mode bit testing by smbfs.

The S_IFxxxx macros aren't bits to be tested, they
are values of the S_IFMT field.

fs/smbfs/proc.c

@@ -560,19 +560,19 @@ static int smb_filetype_to_mode(u32 filetype)
 
 static u32 smb_filetype_from_mode(int mode)
 {
-	if (mode & S_IFREG)
+	if (S_ISREG(mode))
 		return UNIX_TYPE_FILE;
-	if (mode & S_IFDIR)
+	if (S_ISDIR(mode))
 		return UNIX_TYPE_DIR;
-	if (mode & S_IFLNK)
+	if (S_ISLNK(mode))
 		return UNIX_TYPE_SYMLINK;
-	if (mode & S_IFCHR)
+	if (S_ISCHR(mode))
 		return UNIX_TYPE_CHARDEV;
-	if (mode & S_IFBLK)
+	if (S_ISBLK(mode))
 		return UNIX_TYPE_BLKDEV;
-	if (mode & S_IFIFO)
+	if (S_ISFIFO(mode))
 		return UNIX_TYPE_FIFO;
-	if (mode & S_IFSOCK)
+	if (S_ISSOCK(mode))
 		return UNIX_TYPE_SOCKET;
 	return UNIX_TYPE_UNKNOWN;
 }