[shotwell] Fix type of primary_source_id table on upgrade

[Jens Georg <jensgeorg src gnome org>]

commit 7d3034fac2e78b54aa9d70025ff5faafd243a6ca
Author: Jens Georg <mail jensge org>
Date:   Tue Dec 12 20:46:54 2017 +0100

    Fix type of primary_source_id table on upgrade
    
    This is TEXT now, not INTEGER
    
    https://bugzilla.gnome.org/show_bug.cgi?id=790469

 src/db/Db.vala |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/db/Db.vala b/src/db/Db.vala
index 872bf86..3eca8ce 100644
--- a/src/db/Db.vala
+++ b/src/db/Db.vala
@@ -207,7 +207,7 @@ private VerifyResult upgrade_database(int input_version) {
 
     if (!DatabaseTable.has_column("EventTable", "primary_source_id")) {
         message("upgrade_database: adding primary_source_id column to EventTable");
-        if (!DatabaseTable.add_column("EventTable", "primary_source_id", "INTEGER DEFAULT 0"))
+        if (!DatabaseTable.add_column("EventTable", "primary_source_id", "TEXT"))
             return VerifyResult.UPGRADE_ERROR;
     }