Fixed so that random map generation works,

now the segfault should be fixed without consequences.

src/editor/editor_main.cpp

@@ -174,6 +174,10 @@ int main(int argc, char** argv)
 	preproc_map defines_map;
 	defines_map["MEDIUM"] = preproc_define();
 	defines_map["NORMAL"] = preproc_define();
+	// Multiplayer define is needed to access the random map generator
+	// settings. Maybe they should be moved? Or set an EDITOR define and
+	// make it load that way maybe.
+	defines_map["MULTIPLAYER"] = preproc_define();
 	config cfg;
 	try {
 		cfg.read(preprocess_file("data/game.cfg", &defines_map));