server: Return an error for invalid requests instead of killing the client process.

server/request.c

@@ -52,9 +52,12 @@
 #include <poll.h>
 #endif
 
+#include "ntstatus.h"
+#define WIN32_NO_STATUS
 #include "windef.h"
 #include "winbase.h"
 #include "wincon.h"
+#include "winternl.h"
 #include "wine/library.h"
 
 #include "file.h"
@@ -277,8 +280,10 @@ static void call_req_handler( struct thread *thread )
     if (debug_level) trace_request();
 
     if (req < REQ_NB_REQUESTS)
-    {
         req_handlers[req]( &current->req, &reply );
+    else
+        set_error( STATUS_NOT_IMPLEMENTED );
+
     if (current)
     {
         if (current->reply_fd)
@@ -291,9 +296,6 @@ static void call_req_handler( struct thread *thread )
         else fatal_protocol_error( current, "no reply fd for request %d\n", req );
     }
     current = NULL;
-        return;
-    }
-    fatal_protocol_error( current, "bad request %d\n", req );
 }
 
 /* read a request from a thread */