[pango] Fix line break of surrogate characters

[Behdad Esfahbod <behdad src gnome org>]

commit 3bb3a981e6eea19eaa9a5f9a347c78e691e11f96
Author: Behdad Esfahbod <behdad behdad org>
Date:   Sun Dec 2 17:27:52 2012 +0200

    Fix line break of surrogate characters

 pango/break.c |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)
---
diff --git a/pango/break.c b/pango/break.c
index ca1eb43..e8a97c1 100644
--- a/pango/break.c
+++ b/pango/break.c
@@ -986,7 +986,8 @@ pango_default_break (const gchar   *text,
 	      break;
 
 	    case G_UNICODE_BREAK_SURROGATE:
-	      g_assert_not_reached ();
+	      /* Undefined according to UTR#14, but ALLOWED in test data. */
+	      break_op = BREAK_ALLOWED;
 	      break;
 
 	    default:
@@ -1022,7 +1023,8 @@ pango_default_break (const gchar   *text,
 		  break;
 
 		case G_UNICODE_BREAK_SURROGATE:
-		  g_assert_not_reached ();
+		  /* Undefined according to UTR#14, but ALLOWED in test data. */
+		  break_op = BREAK_ALLOWED;
 		  break;
 
 		/* Hangul additions are from Unicode 4.1 UAX#14 */