More fixes for fussy compilers: return types in simulator cc code.

git-svn-id: https://www.prismmodelchecker.org/svn/prism/prism/trunk@484 bbc10eb1-c90d-0410-af57-cb519fbb1720

prism/src/simulator/SimulatorEngine.cc

@@ -206,6 +206,7 @@ JNIEXPORT jint JNICALL Java_simulator_SimulatorEngine_allocatePath
 	try
 	{
 		Allocate_Path();
+		return 0;
 	}
 	catch(string str)
 	{
@@ -222,7 +223,7 @@ JNIEXPORT jint JNICALL Java_simulator_SimulatorEngine_startPath
 	try
 	{
 		Start_Path();
-
+		return 0;
 	}
 	catch(string str)
 	{