[hb-old] Fixup not-enough-space handling

src/hb-old.cc

@@ -329,8 +329,7 @@ retry:
 #undef ALLOCATE_ARRAY
 
   if (!HB_ShapeItem (&item))
-    return false;
-
+  {
     if (unlikely (item.num_glyphs > num_glyphs))
     {
       buffer->ensure (buffer->allocated * 2);
@@ -338,6 +337,8 @@ retry:
 	FAIL ("Buffer resize failed");
       goto retry;
     }
+    return false;
+  }
   num_glyphs = item.num_glyphs;
 
   /* Ok, we've got everything we need, now compose output buffer,