Fix a couple of places where TTO_Err_Not_Covered wasn't considered a

Fri Jul 25 22:25:48 2003  Owen Taylor  <otaylor@redhat.com>

        * pango/opentype/ftxgsub.c (Lookup_ContextSubst2,
        Lookup_ChainContextSubst2): Fix a couple of
        places where TTO_Err_Not_Covered wasn't considered
        a successful return from Get_Class -- it means
        use class index 0. (From FreeType, Werner Lemberg,
        2001-08-06)

src/ftxgsub.c

@@ -2197,7 +2197,7 @@
 
     error = Get_Class( &csf2->ClassDef, in->string[in->pos],
                        &classes[0], NULL );
-    if ( error )
+    if ( error && error != TTO_Err_Not_Covered )
       goto End;
     known_classes = 0;
 
@@ -3571,7 +3571,7 @@
 
     error = Get_Class( &ccsf2->InputClassDef, in->string[in->pos],
                        &input_classes[0], NULL );
-    if ( error )
+    if ( error && error != TTO_Err_Not_Covered )
       goto End1;
 
     cscs = &ccsf2->ChainSubClassSet[input_classes[0]];