[gexiv2/wip/lantw/fix-build-with-exiv2-0.27] iostream: Fix build with Exiv2 0.27

[Ting-Wei Lan <lantw src gnome org>]

commit 5e2489daa509dfa4994ac9b35d6e44b675654995
Author: Ting-Wei Lan <lantw src gnome org>
Date:   Sun Nov 18 14:04:12 2018 +0800

    iostream: Fix build with Exiv2 0.27
    
    Exiv2 0.27 removes EXIV2_TEST_VERSION macro, so we have to compare each
    part of the version number by ourselves.

 gexiv2/gexiv2-stream-io.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/gexiv2/gexiv2-stream-io.h b/gexiv2/gexiv2-stream-io.h
index a26f4e6..7190360 100644
--- a/gexiv2/gexiv2-stream-io.h
+++ b/gexiv2/gexiv2-stream-io.h
@@ -25,7 +25,7 @@ public:
 
        StreamIo (ManagedStreamCallbacks* cb);
 
-#if EXIV2_TEST_VERSION(0,26,0)
+#if EXIV2_MAJOR_VERSION >= 1 || (EXIV2_MAJOR_VERSION == 0 && EXIV2_MINOR_VERSION >= 26)
     typedef size_t size_type;
 #else
     typedef long size_type;