Fix possible crashes

fs_list.c

@@ -13,6 +13,7 @@ int fs_list_get( const char* filename )
 	f = fopen(filename,"r");
 	if( !f ) {
 		printf( "Failed to open %s, initializing at 0\n", filename );
+		fs_list_set(filename,0);
 		return 0;
 	}
 	fscanf( f, "%d", &pos );
@@ -25,11 +26,14 @@ void fs_list_set( const char* path, int value )
 	char buffer[512];
 	snprintf( buffer,sizeof(buffer), "%s.lock", path );
 	int fd = open( buffer, O_CREAT );
+	if( !fd ) { return; }
 	flock( fd, LOCK_EX );
 
 	char tmp_filename[512];
 	snprintf( tmp_filename, 512, "%s.tmp", path );
 	FILE* f = fopen(tmp_filename,"w");
+	if( !f ) { return; }
+
 	fprintf( f, "%d", value );
 	fclose(f);
 	rename( tmp_filename, path );