Add IPv6 address when IPv4 isn't available (#247)

1 files changed, 3 insertions, 0 deletions

diff --git a/i3status.c b/i3status.c
index 558f8ab..2cded06 100644
--- a/i3status.c
+++ b/i3status.c
@@ -111,6 +111,9 @@ static void *scalloc(size_t size) {
 }
 
 char *sstrdup(const char *str) {
+    if (str == NULL) {
+        return NULL;
+    }
     char *result = strdup(str);
     exit_if_null(result, "Error: out of memory (strdup())\n");
     return result;