smyrna safestrdup: accept a const pointer

This will simplify an upcoming change.

diff --git a/cmd/smyrna/gui/frmobjectui.c b/cmd/smyrna/gui/frmobjectui.c
index 468c4639beb8e1957cf7d749ced5099a90d0fcca..521e8c99c453d327298fdd44b55b23154c847163 100644 (file)
--- a/cmd/smyrna/gui/frmobjectui.c
+++ b/cmd/smyrna/gui/frmobjectui.c
@@ -31,8 +31,7 @@ static int sel_node;
 static int sel_edge;
 static int sel_graph;
 
-static char *safestrdup(char *src)
-{
+static char *safestrdup(const char *src) {
     if (!src)
        return NULL;
     else