get the exit condition for the python code right

sim/main.cc:
    get the exit condition right

--HG--
extra : convert_revision : 0dada3d68492c46981c51d3de0de409b282bb13b

sim/main.cc

@@ -369,7 +369,7 @@ main(int argc, char **argv)
         }
     }
 
-    if (python_initialized && finishPythonConfig(simConfigDB)) {
+    if (python_initialized && !finishPythonConfig(simConfigDB)) {
         cprintf("Error processing python code\n");
         exit(1);
     }