SCI32: Implement basic kMessageBox

This kernel call seems only to be used by KQ7 1.51 (which was
Windows-only) to send warnings to the user.

It was easy enough to do a basic implementation in the ScummVM
GUI rather than just make it an empty call, so now it is a thing.

1 files changed, 1 insertions, 0 deletions

diff --git a/engines/sci/engine/kernel.h b/engines/sci/engine/kernel.h
index 6604387254..b269e9789d 100644
--- a/engines/sci/engine/kernel.h
+++ b/engines/sci/engine/kernel.h
@@ -566,6 +566,7 @@ reg_t kMoveToFront(EngineState *s, int argc, reg_t *argv);
 reg_t kMoveToEnd(EngineState *s, int argc, reg_t *argv);
 reg_t kGetWindowsOption(EngineState *s, int argc, reg_t *argv);
 reg_t kWinHelp(EngineState *s, int argc, reg_t *argv);
+reg_t kMessageBox(EngineState *s, int argc, reg_t *argv);
 reg_t kGetConfig(EngineState *s, int argc, reg_t *argv);
 reg_t kGetSierraProfileInt(EngineState *s, int argc, reg_t *argv);
 reg_t kCelInfo(EngineState *s, int argc, reg_t *argv);