[cogl] cogl-path: Fix the uninitialised path->fill_primitive

[Neil Roberts <nroberts src gnome org>]

commit ee834bf10a05cf000d4bc4dd2438ca6cedd8a2b5
Author: Neil Roberts <neil linux intel com>
Date:   Wed Jun 12 14:42:41 2013 +0100

    cogl-path: Fix the uninitialised path->fill_primitive
    
    This was not being uninitialised so it was sometimes causing a crash
    when it tried to unref an invalid pointer. This was causing test-path
    to fail for me.
    
    Reviewed-by: Robert Bragg <robert linux intel com>

 cogl-path/cogl-path.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/cogl-path/cogl-path.c b/cogl-path/cogl-path.c
index 9a1d1df..be8bb04 100644
--- a/cogl-path/cogl-path.c
+++ b/cogl-path/cogl-path.c
@@ -890,6 +890,7 @@ cogl_path_new (CoglContext *context)
   data->last_path = 0;
   data->fill_attribute_buffer = NULL;
   data->stroke_attribute_buffer = NULL;
+  data->fill_primitive = NULL;
   data->is_rectangle = FALSE;
 
   return _cogl_path_object_new (path);