Made connect functions return NULL on alloc failures.

Updated documentation and examples accordingly.

1 files changed, 1 insertions, 1 deletions

diff --git a/README.md b/README.md
index 62fe106..8d788f2 100644
--- a/README.md
+++ b/README.md
@@ -44,7 +44,7 @@ After trying to connect to Redis using `redisConnect` you should
 check the `err` field to see if establishing the connection was successful:
 
     redisContext *c = redisConnect("127.0.0.1", 6379);
-    if (c->err) {
+    if (c != NULL && c->err) {
         printf("Error: %s\n", c->errstr);
         // handle error
     }