Initialise static pointer, just to be safe.

git-svn-id: https://geany.svn.sourceforge.net/svnroot/geany/trunk@3296 ea778897-0a13-0410-b9d1-a72fbfd435f5

src/utils.c

@@ -1525,7 +1525,7 @@ gboolean utils_spawn_async(const gchar *dir, gchar **argv, gchar **env, GSpawnFl
  * but this should be the case for filenames. */
 const gchar *utils_build_path(const gchar *first, ...)
 {
-	static GString *buffer;
+	static GString *buffer = NULL;
 	const gchar *str;
 	va_list args;