[reactos] 01/01: [User32] Fix null return.

[jimtabor]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=d8add40e893c4bbbb7221…

commit d8add40e893c4bbbb72211cae3e351445e53a3f4
Author:     jimtabor <james.tabor(a)reactos.org>
AuthorDate: Sat Mar 28 14:03:15 2020 -0500
Commit:     jimtabor <james.tabor(a)reactos.org>
CommitDate: Sat Mar 28 14:03:15 2020 -0500

    [User32] Fix null return.
    
    See CORE-16769.
---
 win32ss/user/user32/windows/window.c | 20 +++++++++++---------
 1 file changed, 11 insertions(+), 9 deletions(-)

diff --git a/win32ss/user/user32/windows/window.c b/win32ss/user/user32/windows/window.c
index 40f051d3b6d..60c9feb47f5 100644
--- a/win32ss/user/user32/windows/window.c
+++ b/win32ss/user/user32/windows/window.c
@@ -159,16 +159,18 @@ RtlGetExpWinVer( HMODULE hModule )
     if ( hModule && !((ULONG_PTR)hModule >> 16))
     {
         pinth = RtlImageNtHeader( hModule );
-
-        dwMajorVersion = pinth->OptionalHeader.MajorSubsystemVersion;
-
-        if ( dwMajorVersion == 1 )
-        {
-            dwMajorVersion = 3;
-        }
-        else
+        if ( pinth )
         {
-            dwMinorVersion = pinth->OptionalHeader.MinorSubsystemVersion;
+            dwMajorVersion = pinth->OptionalHeader.MajorSubsystemVersion;
+
+            if ( dwMajorVersion == 1 )
+            {
+                dwMajorVersion = 3;
+            }
+            else
+            {
+                dwMinorVersion = pinth->OptionalHeader.MinorSubsystemVersion;
+            }
         }
     }
     return MAKELONG(MAKEWORD(dwMinorVersion, dwMajorVersion), 0);