[tracker] libtracker-fts: Silence compiler warning

[Carlos Garnacho <carlosg src gnome org>]

commit 5fd569e52501d58b94326ba4f0f6ebe6bb31e1eb
Author: Carlos Garnacho <carlosg gnome org>
Date:   Sun Aug 20 19:30:27 2017 +0200

    libtracker-fts: Silence compiler warning
    
    Complains that rc might be used uninitialized, but the loop is guaranteed
    to have >0 elements, besides rank is initialized to 0. Initializing it to
    SQLITE_OK will be fine.

 src/libtracker-fts/tracker-fts-tokenizer.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/libtracker-fts/tracker-fts-tokenizer.c b/src/libtracker-fts/tracker-fts-tokenizer.c
index 809e94e..7b0af2d 100644
--- a/src/libtracker-fts/tracker-fts-tokenizer.c
+++ b/src/libtracker-fts/tracker-fts-tokenizer.c
@@ -342,7 +342,7 @@ tracker_rank_function (const Fts5ExtensionApi  *api,
                        sqlite3_value          **args)
 {
        TrackerTokenizerFunctionData *data;
-       int i, rc, n_columns, n_tokens;
+       int i, rc = SQLITE_OK, n_columns, n_tokens;
        GHashTable *weights;
        gdouble rank = 0;