Fix PrefsInit() calls to take correct number of parameter

BasiliskII/src/Unix/prefs_editor_gtk.cpp

@@ -1730,7 +1730,7 @@ int main(int argc, char *argv[])
 #endif
 
 	// Read preferences
-	PrefsInit(argc, argv);
+	PrefsInit(NULL, argc, argv);
 
 	// Show preferences editor
 	bool start = PrefsEditor();

BasiliskII/src/Windows/main_windows.cpp

@@ -267,7 +267,7 @@ int main(int argc, char **argv)
 	}
 
 	// Read preferences
-	PrefsInit(argc, argv);
+	PrefsInit(NULL, argc, argv);
 
 	// Boot MacOS from CD-ROM?
 	if (cd_boot)