Alexandre Julliard : comdlg32: Avoid crash when driver name doesn' t contain a backslash.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 67a0db3c38ead3178912d44604fd90440b57f5a8
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=67a0db3c38ead3178912d44604...

Author: Alexandre Julliard <julliard(a)winehq.org>
Date:   Fri Feb 24 12:48:00 2012 +0100

comdlg32: Avoid crash when driver name doesn't contain a backslash.

---

 dlls/comdlg32/printdlg.c |    8 ++++++--
 1 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/dlls/comdlg32/printdlg.c b/dlls/comdlg32/printdlg.c
index d074563..7ce9148 100644
--- a/dlls/comdlg32/printdlg.c
+++ b/dlls/comdlg32/printdlg.c
@@ -321,8 +321,10 @@ static BOOL PRINTDLG_CreateDevNames(HGLOBAL *hmem, const char* DeviceDriverName,
     LPDEVNAMES lpDevNames;
     char buf[260];
     DWORD dwBufLen = sizeof(buf);
+    const char *p;
 
-    DeviceDriverName = strrchr(DeviceDriverName, '\\') + 1;
+    p = strrchr( DeviceDriverName, '\\' );
+    if (p) DeviceDriverName = p + 1;
 
     size = strlen(DeviceDriverName) + 1
             + strlen(DeviceName) + 1
@@ -366,8 +368,10 @@ static BOOL PRINTDLG_CreateDevNamesW(HGLOBAL *hmem, LPCWSTR DeviceDriverName,
     LPDEVNAMES lpDevNames;
     WCHAR bufW[260];
     DWORD dwBufLen = sizeof(bufW) / sizeof(WCHAR);
+    const WCHAR *p;
 
-    DeviceDriverName = strrchrW(DeviceDriverName, '\\') + 1;
+    p = strrchrW( DeviceDriverName, '\\' );
+    if (p) DeviceDriverName = p + 1;
 
     size = sizeof(WCHAR)*lstrlenW(DeviceDriverName) + 2
             + sizeof(WCHAR)*lstrlenW(DeviceName) + 2