minor tweaks to test/ufuzz.js

- count iterations from `1` instead of `0`
- remove `unsafe` from default set of `minify()` tests

test/ufuzz.js

@@ -737,7 +737,7 @@ var minify_options = require("./ufuzz.json").map(function(options) {
 });
 var original_code, original_result;
 var uglify_code, uglify_result, ok;
-for (var round = 0; round < num_iterations; round++) {
+for (var round = 1; round <= num_iterations; round++) {
     process.stdout.write(round + " of " + num_iterations + "\r");
 
     VAR_NAMES.length = INITIAL_NAMES_LEN; // prune any previous names still in the list

test/ufuzz.json

@@ -27,7 +27,6 @@
             "keep_fargs": false,
             "passes": 3,
             "pure_getters": true,
-            "unsafe": true,
             "warnings": false
         }
     }