[truetype]: Fix behaviour of MIAP for invalid arguments.

* src/truetype/ttinterp.c (Ins_MIAP): Set reference points even in
case of error.

ChangeLog

@@ -1,3 +1,10 @@
+2011-01-30  LIU Sun-Liang  <sunliang_liu@foxitsoftware.com>
+
+	[truetype]: Fix behaviour of MIAP for invalid arguments.
+
+	* src/truetype/ttinterp.c (Ins_MIAP): Set reference points even in
+	case of error.
+
 2011-01-18  Werner Lemberg  <wl@gnu.org>
 
 	[truetype] Fix handling of MIRP instruction.

src/truetype/ttinterp.c

@@ -5996,7 +5996,7 @@
     {
       if ( CUR.pedantic_hinting )
         CUR.error = TT_Err_Invalid_Reference;
-      return;
+      goto Fail;
     }
 
     /* XXX: UNDOCUMENTED!                                */
@@ -6042,6 +6042,7 @@
 
     CUR_Func_move( &CUR.zp0, point, distance - org_dist );
 
+  Fail:
     CUR.GS.rp0 = point;
     CUR.GS.rp1 = point;
   }