core plugin isXDot: return a C99 bool

This makes the intent of this function slightly clearer.

diff --git a/plugin/core/gvrender_core_json.c b/plugin/core/gvrender_core_json.c
index 148d88bba75e384f0e5c43eb8b7b537080803522..dfb7b258745ae3c6cfc7296da20bf27a4764ca0b 100644 (file)
--- a/plugin/core/gvrender_core_json.c
+++ b/plugin/core/gvrender_core_json.c
@@ -330,7 +330,7 @@ static void write_xdots (char * val, GVJ_t * job, state_t* sp)
     freeXDot(cmds);
 }
 
-static int isXDot(const char* name) {
+static bool isXDot(const char* name) {
   return streq(name, "_draw_") || streq(name, "_ldraw_") ||
          streq(name, "_hdraw_") || streq(name, "_tdraw_") ||
          streq(name, "_hldraw_") || streq(name, "_tldraw_");