Piotr Caban : wineps.drv: Don't crash if specified font is missing required table in T42_download_header.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: d5988259c110dca1e24d12b6114ed1d2e0f7fea6
URL:    https://gitlab.winehq.org/wine/wine/-/commit/d5988259c110dca1e24d12b6114ed1d...

Author: Piotr Caban <piotr(a)codeweavers.com>
Date:   Tue Sep 19 19:41:45 2023 +0200

wineps.drv: Don't crash if specified font is missing required table in T42_download_header.

---

 dlls/wineps.drv/type42.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/dlls/wineps.drv/type42.c b/dlls/wineps.drv/type42.c
index e495ddc0394..0867881b68e 100644
--- a/dlls/wineps.drv/type42.c
+++ b/dlls/wineps.drv/type42.c
@@ -170,7 +170,6 @@ TYPE42 *T42_download_header(print_ctx *ctx, char *ps_name,
 
     t42 = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*t42));
     memcpy(t42->tables, tables_templ, sizeof(tables_templ));
-    t42->loca_tab = t42->glyf_tab = t42->head_tab = -1;
     t42->emsize = emsize;
     t42->num_of_written_tables = 0;
 
@@ -186,6 +185,9 @@ TYPE42 *T42_download_header(print_ctx *ctx, char *ps_name,
 	    t42->head_tab = i;
 	else if(t42->tables[i].MS_tag == MS_MAKE_TAG('m','a','x','p'))
 	    t42->maxp_tab = i;
+        else
+            continue;
+        if(!t42->tables[i].len) break;
     }
     if(i < num_of_tables) {
         TRACE("Table %ld has length %ld.  Will use Type 1 font instead.\n", i, t42->tables[i].len);