[reactos] 01/01: [NTGDI] Check if face->charmap is not zero before accessing its encoding (#4390)

[Julio Carchi]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=a999c4374607861cdc557…

commit a999c4374607861cdc5576e8a9255958e15273f6
Author:     Julio Carchi <julcar(a)informaticos.com>
AuthorDate: Wed Jan 18 13:24:40 2023 -0500
Commit:     GitHub <noreply(a)github.com>
CommitDate: Wed Jan 18 21:24:40 2023 +0300

    [NTGDI] Check if face->charmap is not zero before accessing its encoding (#4390)
    
    This allows DevExpress Ribbon Notepad sample to start.
    
    Also add a fat DPRINT1 suggested by Timo Kreuzer,
    because there is a lot wrong in the code.
    
    CORE-18091 CORE-18558
---
 win32ss/gdi/ntgdi/freetype.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/win32ss/gdi/ntgdi/freetype.c b/win32ss/gdi/ntgdi/freetype.c
index ca1285a4ae7..fcf6f2dfcc7 100644
--- a/win32ss/gdi/ntgdi/freetype.c
+++ b/win32ss/gdi/ntgdi/freetype.c
@@ -4490,6 +4490,12 @@ ftGetFontUnicodeRanges(PFONTGDI Font, PGLYPHSET glyphset)
     DWORD num_ranges = 0;
     FT_Face face = Font->SharedFace->Face;
 
+    if (face->charmap == NULL)
+    {
+        DPRINT1("FIXME: No charmap selected! This is a BUG!\n");
+        return 0;
+    }
+
     if (face->charmap->encoding == FT_ENCODING_UNICODE)
     {
         FT_UInt glyph_code = 0;