Sqlite: Add additional Utf8String::operator==.

There was operator==(const Utf8String &, const char *), but not the
counterpart with the argument types switched.

Change-Id: Ie9ef5c21da0c39881ecad7ea080b87eefe6c4d02
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@theqtcompany.com>

src/libs/sqlite/utf8string.cpp

@@ -227,6 +227,11 @@ bool operator==(const Utf8String &first, const char *second)
     return first.byteArray == second;
 }
 
+bool operator==(const char *first, const Utf8String &second)
+{
+    return second == first;
+}
+
 bool operator==(const Utf8String &first, const QString &second)
 {
     return first.byteArray == second.toUtf8();