Fix benign Unknown lang table bug; no changes to anything else.

git-svn-id: https://cld2.googlecode.com/svn/trunk@76 b252ecd4-b096-bf77-eb8e-91563289f87e
diff --git a/internal/generated_language.cc b/internal/generated_language.cc
index 39b8e0a..b09d3bd 100644
--- a/internal/generated_language.cc
+++ b/internal/generated_language.cc
@@ -3301,7 +3301,7 @@
   URDU,                  // 18
   BIHARI,                // 19
   TG_UNKNOWN_LANGUAGE,   // 20
-  GUJARATI,              // 21
+  UNKNOWN_LANGUAGE,      // 21  (updated 2013.09.07 dsites)
   THAI,                  // 22
   SERBIAN,               // 23
   ARABIC,                // 24