Tests: changed log js test.

SEE-THIS label is already used in 'return text' test.  To avoid potential
overlap, a different label should be used for 'log js' test.
diff --git a/js.t b/js.t
index 48466b9..ead6b8a 100644
--- a/js.t
+++ b/js.t
@@ -222,7 +222,7 @@
     }
 
     function test_log(r) {
-        r.log('SEE-THIS');
+        r.log('SEE-LOG');
     }
 
     function test_except(r) {
@@ -298,7 +298,7 @@
 
 $t->stop();
 
-ok(index($t->read_file('error.log'), 'SEE-THIS') > 0, 'log js');
+ok(index($t->read_file('error.log'), 'SEE-LOG') > 0, 'log js');
 ok(index($t->read_file('error.log'), 'at fs.readFileSync') > 0,
 	'js_set backtrace');
 ok(index($t->read_file('error.log'), 'at JSON.parse') > 0,