public: crtlib: fix error in COM_SlashPathFix

public/crtlib.c

@@ -936,7 +936,7 @@ void COM_PathSlashFix( char *path )
 
 	len = Q_strlen( path );
 
-	if( path[len - 1] != '\\' || path[len - 1] != '/' )
+	if( path[len - 1] != '\\' && path[len - 1] != '/' )
 		Q_strcpy( &path[len], "/" );
 }