Fix potential blank node ID truncation

NEWS

@@ -1,3 +1,9 @@
+sratom (0.6.9) unstable;
+
+  * Fix potential blank node ID truncation
+
+ -- David Robillard <d@drobilla.net>  Sun, 10 Jan 2021 22:10:23 +0000
+
 sratom (0.6.8) stable;
 
   * Fix potential null pointer dereference

src/sratom.c

@@ -140,7 +140,7 @@ sratom_set_object_mode(Sratom* sratom, SratomObjectMode object_mode)
 static void
 gensym(SerdNode* out, char c, unsigned num)
 {
-  out->n_bytes = out->n_chars = snprintf((char*)out->buf, 10, "%c%u", c, num);
+  out->n_bytes = out->n_chars = snprintf((char*)out->buf, 12, "%c%u", c, num);
 }
 
 static void