THRIFT-420. Remove all negative structure field ids from the code


git-svn-id: https://svn.apache.org/repos/asf/incubator/thrift/trunk@761393 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/test/DenseLinkingTest.thrift b/test/DenseLinkingTest.thrift
index a23ad20..cf61496 100644
--- a/test/DenseLinkingTest.thrift
+++ b/test/DenseLinkingTest.thrift
@@ -88,5 +88,5 @@
 }
 
 service Srv {
-  i32 Janky(i32 arg)
+  i32 Janky(1: i32 arg)
 }