gss-log: fix another duplicate symbol build error

duplicate symbol __gss_error_quark in:
    .libs/libgss_1.0_la-gss-server.o
    .libs/libgss_1.0_la-gss-config.o
duplicate symbol __gss_error_quark in:
    .libs/libgss_1.0_la-gss-server.o
    .libs/libgss_1.0_la-gss-log.o
..

2 files changed, 3 insertions, 1 deletions

diff --git a/gst-streaming-server/gss-log.c b/gst-streaming-server/gss-log.c
index bf9ba07..a561a08 100644
--- a/gst-streaming-server/gss-log.c
+++ b/gst-streaming-server/gss-log.c
@@ -21,6 +21,8 @@
 
 static int gss_log_verbosity = 0;
 
+GQuark _gss_error_quark = 0;
+
 static void log_handler (GstDebugCategory * category, GstDebugLevel level,
     const gchar * file, const gchar * function, gint line, GObject * object,
     GstDebugMessage * message, gpointer data);
diff --git a/gst-streaming-server/gss-log.h b/gst-streaming-server/gss-log.h
index 5fee94d..9a785b3 100644
--- a/gst-streaming-server/gss-log.h
+++ b/gst-streaming-server/gss-log.h
@@ -30,7 +30,7 @@ typedef enum {
   GSS_ERROR_FILE_READ
 } GssErrorEnum;
 
-GQuark _gss_error_quark;
+extern GQuark _gss_error_quark;
 
 void gss_log_init (void);
 void gss_log_set_verbosity (int level);