[tracker] libtracker-data: Explicitly cast string to char*

[Carlos Garnacho <carlosg src gnome org>]

commit 1c7c1e507c9abff7f0110d6b079a92edf139d31d
Author: Carlos Garnacho <carlosg gnome org>
Date:   Sat Nov 19 23:36:16 2016 +0100

    libtracker-data: Explicitly cast string to char*
    
    This fixes a valac warning.

 src/libtracker-data/tracker-sparql-scanner.vala |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/libtracker-data/tracker-sparql-scanner.vala b/src/libtracker-data/tracker-sparql-scanner.vala
index e370560..79d181b 100644
--- a/src/libtracker-data/tracker-sparql-scanner.vala
+++ b/src/libtracker-data/tracker-sparql-scanner.vala
@@ -960,7 +960,7 @@ public class Tracker.SparqlScanner : Object {
        }
 
        bool matches (char* begin, string keyword) {
-               char* keyword_array = keyword;
+               char* keyword_array = (char*) keyword;
                for (int i = 0; keyword_array[i] != 0; i++) {
                        if (begin[i].toupper () != keyword_array[i]) {
                                return false;