Merged revisions 42201-42202 via svnmerge from

https://scummvm.svn.sourceforge.net/svnroot/scummvm/scummvm/trunk

........
  r42201 | thebluegr | 2009-07-07 16:53:53 +1000 (Tue, 07 Jul 2009) | 1 line
  
  Prevent a crash when the engine errors out before the game state is initialized
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  r42202 | Kirben | 2009-07-07 17:02:04 +1000 (Tue, 07 Jul 2009) | 1 line
  
  Set the correct sound rate for Personal Nightmare.
........

svn-id: r42204

1 files changed, 8 insertions, 3 deletions

diff --git a/engines/sci/sci.cpp b/engines/sci/sci.cpp
index 1f2e2cf1cd..7e2940dbd1 100644
--- a/engines/sci/sci.cpp
+++ b/engines/sci/sci.cpp
@@ -89,6 +89,8 @@ SciEngine::SciEngine(OSystem *syst, const SciGameDescription *desc)
 	Common::addDebugChannel(kDebugLevelScripts, "Scripts", "Notifies when scripts are unloaded");
 	Common::addDebugChannel(kDebugLevelGC, "GC", "Garbage Collector debugging");
 
+	_gamestate = 0;
+
 	printf("SciEngine::SciEngine\n");
 }
 
@@ -258,11 +260,14 @@ Common::Error SciEngine::run() {
 
 // Invoked by error() when a severe error occurs
 GUI::Debugger *SciEngine::getDebugger() {
-	ExecStack *xs = &(_gamestate->_executionStack.back());
+	if (_gamestate) {
+		ExecStack *xs = &(_gamestate->_executionStack.back());
+		xs->addr.pc.offset = debugState.old_pc_offset;
+		xs->sp = debugState.old_sp;
+	}
+
 	debugState.runningStep = 0; // Stop multiple execution
 	debugState.seeking = kDebugSeekNothing; // Stop special seeks
-	xs->addr.pc.offset = debugState.old_pc_offset;
-	xs->sp = debugState.old_sp;
 
 	return _console;
 }