user_spline: [nfc] use a C99 bool instead of boolean for 'warned'

diff --git a/lib/neatogen/neatoinit.c b/lib/neatogen/neatoinit.c
index d14ecde6c307d07ebbd976d0fd041bcf5f721596..be580b903b605cdec385de083714f4af899bcca8 100644 (file)
--- a/lib/neatogen/neatoinit.c
+++ b/lib/neatogen/neatoinit.c
@@ -27,6 +27,7 @@
 #include <common/pointset.h>
 #include <neatogen/sgd.h>
 #include <cgraph/strcasecmp.h>
+#include <stdbool.h>
 
 #ifndef HAVE_SRAND48
 #define srand48 srand
@@ -262,7 +263,7 @@ static int user_spline(attrsym_t * E_pos, edge_t * e)
     bezier *newspl;
     int more = 1;
     int stype, etype;
-    static boolean warned;
+    static bool warned;
 
     pos = agxget(e, E_pos);
     if (*pos == '\0')
@@ -293,7 +294,7 @@ static int user_spline(attrsym_t * E_pos, edge_t * e)
        if (n < 4 || n % 3 != 1) {
            gv_free_splines(e);
            if (!warned) {
-               warned = 1;
+               warned = true;
                agerr(AGWARN, "pos attribute for edge (%s,%s) doesn't have 3n+1 points\n", agnameof(agtail(e)), agnameof(aghead(e)));
            }
            return 0;
@@ -304,7 +305,7 @@ static int user_spline(attrsym_t * E_pos, edge_t * e)
            i = sscanf(pos, "%lf,%lf%n", &x, &y, &nc);
            if (i < 2) {
                if (!warned) {
-                   warned = 1;
+                   warned = true;
                    agerr(AGWARN, "syntax error in pos attribute for edge (%s,%s)\n", agnameof(agtail(e)), agnameof(aghead(e)));
                }
                free(ps);