check for CONNECTION_BAD status before calling PQsetnonblocking

Author: booo

src/binding.cc

@@ -329,18 +329,18 @@ class Connection : public ObjectWrap {
       LOG("Connection couldn't be created");
     }
 
-    if (PQsetnonblocking(connection_, 1) == -1) {
-      LOG("Unable to set connection to non-blocking");
-      return false;
-    }
-
     ConnStatusType status = PQstatus(connection_);
 
     if(CONNECTION_BAD == status) {
       LOG("Bad connection status");
       return false;
     }
 
+    if (PQsetnonblocking(connection_, 1) == -1) {
+      LOG("Unable to set connection to non-blocking");
+      return false;
+    }
+
     int fd = PQsocket(connection_);
     if(fd < 0) {
       LOG("socket fd was negative. error");