[shotwell] Revert "Fix typo in _GIT_VERSION predefine"

[Jens Georg <jensgeorg src gnome org>]

commit b5949a78a2bd4f40b1e7fd16498ab53aeb52e37b
Author: Jens Georg <mail jensge org>
Date:   Thu May 3 21:13:54 2018 +0200

    Revert "Fix typo in _GIT_VERSION predefine"
    
    This reverts commit b8f1486834e24d0cba79d809d96093fd05f0e9d5.

 src/Resources.vala |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/Resources.vala b/src/Resources.vala
index 70c4a7b..2aa32c7 100644
--- a/src/Resources.vala
+++ b/src/Resources.vala
@@ -18,7 +18,7 @@ namespace Resources {
     public const string APP_DIRECT_ROLE = _("Photo Viewer");
     public const string APP_VERSION = _VERSION;
 
-#if _GIT_VERSION
+#if _GITVERSION
     public const string? GIT_VERSION = _GIT_VERSION;
 #else
     public const string? GIT_VERSION = null;