[tracker-miners] meson: Actually honour the guarantee_metadata option

[Sam Thursfield <sthursfield src gnome org>]

commit 026b223ae1902ef866bacfaab88e4998198c8b57
Author: Sam Thursfield <sam afuera me uk>
Date:   Sun Jul 15 14:18:49 2018 +0200

    meson: Actually honour the guarantee_metadata option
    
    We weren't writing GUARANTEE_METADATA into config.h, so this option was
    never being enabled.

 meson.build | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/meson.build b/meson.build
index 943c024cf..62e5e6846 100644
--- a/meson.build
+++ b/meson.build
@@ -283,6 +283,7 @@ conf = configuration_data()
 
 # Config that goes in config.h
 conf.set('DISABLE_JOURNAL', get_option('journal') == false)
+conf.set('GUARANTEE_METADATA', get_option('guarantee_metadata') == true)
 conf.set('USING_UNZIPPSFILES', get_option('unzip_ps_gz_files') == true)
 
 conf.set('HAVE_ENCA', charset_library_name == 'enca')