smyrna gvpr_select: remove NULL-hinted call to 'agxbinit'

Reverting 656a15f855a31acc6eeb162284b89ad3367253b9 reintroduced a NULL-hinted
call to `agxbinit`. But in the meantime,
db5dc6497e86b886a41d52ea13f0598ecaa9c296 removed all such uses replacing them
with an equivalent zero initialization. This commit updates the `gvpr_select`
usage to be in line with other usage in the current Graphviz tree.

diff --git a/cmd/smyrna/gui/frmobjectui.c b/cmd/smyrna/gui/frmobjectui.c
index 6e6b04fa04a862e6b1a3d9986ef9c4957f3068a2..cc09dfeef23ff7a244c1475dcd39262892472ad9 100644 (file)
--- a/cmd/smyrna/gui/frmobjectui.c
+++ b/cmd/smyrna/gui/frmobjectui.c
@@ -710,8 +710,7 @@ static void gvpr_select(char *attrname, char *regex_str, int objType) {
     int i, argc;
     char **argv;
 
-    agxbuf sf;
-    agxbinit(&sf, 0, NULL);
+    agxbuf sf = {0};
 
     if (objType == AGNODE)
        agxbprint(&sf, "N[%s==\"%s\"]{selected = \"1\"}", attrname, regex_str);