[vala] gidlparser: Make sure to only handle the needed cairo symbols

[Rico Tzschichholz <ricotz src gnome org>]

commit 52f3661edd7a3886495309b1c8cd49be42f7091d
Author: Rico Tzschichholz <ricotz ubuntu com>
Date:   Wed Jul 27 15:15:38 2016 +0200

    gidlparser: Make sure to only handle the needed cairo symbols

 vapigen/valagidlparser.vala |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/vapigen/valagidlparser.vala b/vapigen/valagidlparser.vala
index 0cb51c2..380fb0a 100644
--- a/vapigen/valagidlparser.vala
+++ b/vapigen/valagidlparser.vala
@@ -1896,7 +1896,8 @@ public class Vala.GIdlParser : CodeVisitor {
                        type.unresolved_symbol = new UnresolvedSymbol (new UnresolvedSymbol (null, "GLib"), 
"HashTable");
                } else if (type_node.tag == TypeTag.ERROR) {
                        type.unresolved_symbol = new UnresolvedSymbol (new UnresolvedSymbol (null, "GLib"), 
"Error");
-               } else if (type_node.unparsed.has_prefix ("cairo_")) {
+               } else if (type_node.unparsed.has_prefix ("cairo_device_t") || type_node.unparsed.has_prefix 
("cairo_pattern_t") ||
+                   type_node.unparsed.has_prefix ("cairo_surface_t")) {
                        if (type_node.unparsed.has_prefix ("cairo_device_t")) {
                                type.unresolved_symbol = new UnresolvedSymbol (new UnresolvedSymbol (null, 
"Cairo"), "Device");
                        } else if (type_node.unparsed.has_prefix ("cairo_pattern_t")) {