use fallback value in case PhLocalSystemName = NULL

git-svn-id: svn://svn.code.sf.net/p/processhacker/code@4178 21ef857c-d57f-4fe0-8362-d861dc6d29cd

2.x/trunk/ProcessHacker/main.c

@@ -92,6 +92,10 @@ INT WINAPI WinMain(
 
     PhLocalSystemName = PhGetSidFullName(&PhSeLocalSystemSid, TRUE, NULL);
 
+    // There has been a report of the above call failing.
+    if (!PhLocalSystemName)
+        PhLocalSystemName = PhCreateString(L"NT AUTHORITY\\SYSTEM");
+
     PhApplicationFileName = PhGetApplicationFileName();
     PhApplicationDirectory = PhGetApplicationDirectory();