Hugh McMaster : regedit: Correctly export hex values with no data.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: aabdc271f8103465682e5cab81e61892890ce26f
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=aabdc271f8103465682e5cab81e61892890ce26f

Author: Hugh McMaster <hugh.mcmaster at outlook.com>
Date:   Fri Nov 10 12:23:04 2017 +0000

regedit: Correctly export hex values with no data.

Signed-off-by: Hugh McMaster <hugh.mcmaster at outlook.com>
Signed-off-by: Alexandre Julliard <julliard at winehq.org>

---

 programs/regedit/regproc.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/programs/regedit/regproc.c b/programs/regedit/regproc.c
index a70a6d1..3d1e3da 100644
--- a/programs/regedit/regproc.c
+++ b/programs/regedit/regproc.c
@@ -1300,6 +1300,8 @@ static void export_hex_data(FILE *fp, WCHAR **buf, DWORD type, DWORD line_len,
 
     line_len += export_hex_data_type(fp, type, unicode);
 
+    if (!size) return;
+
     if (!unicode && (type == REG_EXPAND_SZ || type == REG_MULTI_SZ))
         data = GetMultiByteStringN(data, size / sizeof(WCHAR), &size);
 
@@ -1354,8 +1356,12 @@ static void export_data(FILE *fp, WCHAR *value_name, DWORD value_len, DWORD type
         break;
     }
 
-    REGPROC_write_line(fp, buf, unicode);
-    heap_free(buf);
+    if (size || type == REG_SZ)
+    {
+        REGPROC_write_line(fp, buf, unicode);
+        heap_free(buf);
+    }
+
     export_newline(fp, unicode);
 }