example: fix sample.c

example/sample.c

@@ -29,7 +29,7 @@ int main(int argc, char **argv)
             printf("likely os: %s\n", osfp_result_os_name_get(result)); 
             printf("details: \n%s\n", osfp_result_score_detail_export(result)); 
             osfp_result_free(result);
-            osfp_db_free(db); 
         } 
+        osfp_db_free(db); 
     }
 }