fix dirent field lengths and setting of LFN name length.

kickstart.a65

@@ -2436,7 +2436,7 @@ dos_opendir_entry:
 ; Current long filename (max 64 bytes)
 dos_dirent_longfilename:
 		.byte "Venezualen casaba melon productio"
-		.byte "n statistics (2012-2015).txt     "
+		.byte "n statistics (2012-2015).txt  "
 		.byte 0
 dos_dirent_longfilename_length:
 		.byte 0

kickstart_dos.a65

@@ -1263,6 +1263,7 @@ drce_next_piece:
 drce2:	lda (<dos_scratch_vector),y
 	beq drce_eot_in_filename
 	sta dos_dirent_longfilename,x
+	stx dos_dirent_longfilename_length
 	inx
 	; protect against over-long LFNs
 	cpx #$40
@@ -1278,6 +1279,7 @@ drce2:	lda (<dos_scratch_vector),y
 drce3:	lda (<dos_scratch_vector),y
 	beq drce_eot_in_filename
 	sta dos_dirent_longfilename,x
+	stx dos_dirent_longfilename_length
 	inx
 	; protect against over-long LFNs
 	cpx #$40
@@ -1293,6 +1295,7 @@ drce3:	lda (<dos_scratch_vector),y
 drce4:	lda (<dos_scratch_vector),y
 	beq drce_eot_in_filename
 	sta dos_dirent_longfilename,x
+	stx dos_dirent_longfilename_length
 	inx
 	; protect against over-long LFNs
 	cpx #$40
@@ -1312,6 +1315,7 @@ drce_eot_in_filename:
 	; null terminate if there is space, for convenience
 	lda #$00
 	sta dos_dirent_longfilename,x
+	stx dos_dirent_longfilename_length
 drce_eot_in_filename2:
 
 drce_piece_didnt_grow_name_length:
@@ -1359,6 +1363,7 @@ drce5:	lda (<dos_scratch_vector),y
 	ldx #$00
 drce7:	lda (<dos_scratch_vector),y
 	sta dos_dirent_longfilename,x
+	stx dos_dirent_longfilename_length
 	inx
 	iny
 	cmp #$20            ; space indicates end of short name before extension
@@ -1370,12 +1375,14 @@ drce_insert_dot:
 	dex
 	lda #'.
 	sta dos_dirent_longfilename,x
+	stx dos_dirent_longfilename_length
 	inx
 	; copy extension part
 	ldy #fs_fat32_dirent_offset_shortname+8
 	ldz #0
 drce6:	lda (<dos_scratch_vector),y
 	sta dos_dirent_longfilename,x
+	stx dos_dirent_longfilename_length
 	inx
 	iny
 	inz
@@ -1389,7 +1396,7 @@ drce6:	lda (<dos_scratch_vector),y
 drce_copied_extension:
 	; null terminate short name for convenience in our debugging
 	lda #$00
-	sta dos_dirent_longfilename,x
+	sta dos_dirent_longfilename,x	
 	; record length of short name
 	stx dos_dirent_longfilename_length