gvpack cloneGraph: [nfc] replace a boolean with a C99 bool

diff --git a/cmd/tools/gvpack.c b/cmd/tools/gvpack.c
index 30b2629ecefe6a141d97e5bd3669c69cb2f3c089..545d8b9a2987e06dafdcaa2c99ff3f7bcb5081f9 100644 (file)
--- a/cmd/tools/gvpack.c
+++ b/cmd/tools/gvpack.c
@@ -26,6 +26,7 @@
 #include <ingraphs/ingraphs.h>
 #include <pack/pack.h>
 #include <stddef.h>
+#include <stdbool.h>
 
 #if defined(_WIN32)
   __declspec(dllimport)
@@ -661,7 +662,7 @@ static Agraph_t *cloneGraph(Agraph_t ** gs, int cnt, GVC_t * gvc)
     Dt_t *nnames;              /* dict of used node names */
     Agsym_t *G_bb;
     Agsym_t *rv;
-    boolean doWarn = TRUE;
+    bool doWarn = true;
 
     if (verbose)
        fprintf(stderr, "Creating clone graph\n");
@@ -699,7 +700,7 @@ static Agraph_t *cloneGraph(Agraph_t ** gs, int cnt, GVC_t * gvc)
                        "Warning: node %s in graph[%d] %s already defined\n",
                        agnameof(n), i, agnameof(g));
                fprintf(stderr, "Some nodes will be renamed.\n");
-               doWarn = FALSE;
+               doWarn = false;
            }
            np = agnode(root, xName(nnames, agnameof(n)), 1);
            agbindrec (np, "Agnodeinfo_t", sizeof(Agnodeinfo_t), TRUE);