From: Matthew Fernandez <matthew.fernandez@gmail.com>
Date: Wed, 10 Aug 2022 15:49:06 +0000 (-0700)
Subject: xdot parsePolyline: standardize on returning 'NULL' instead of '0'
X-Git-Tag: 5.0.1~14^2
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=6eac17b38feef6c4ad683250d229a3d61705bfbb;p=graphviz

xdot parsePolyline: standardize on returning 'NULL' instead of '0'
---

diff --git a/lib/xdot/xdot.c b/lib/xdot/xdot.c
index 7eb7228a3..fb8b019ac 100644
--- a/lib/xdot/xdot.c
+++ b/lib/xdot/xdot.c
@@ -92,7 +92,7 @@ static char *parsePolyline(char *s, xdot_polyline * pp)
     char* endp;
 
     s = parseInt(s, &i);
-    if (!s) return s;
+    if (!s) return NULL;
     if (i < 0) return NULL;
     pts = ps = gv_calloc((size_t)i, sizeof(ps[0]));
     pp->cnt = i;
@@ -100,14 +100,14 @@ static char *parsePolyline(char *s, xdot_polyline * pp)
 	ps->x = strtod (s, &endp);
 	if (s == endp) {
 	    free (pts);
-	    return 0;
+	    return NULL;
 	}
 	else
 	    s = endp;
 	ps->y = strtod (s, &endp);
 	if (s == endp) {
 	    free (pts);
-	    return 0;
+	    return NULL;
 	}
 	else
 	    s = endp;