fix(nimble): Address few coverity reported issues

1. Overflowed constant (INTEGER_OVERFLOW): Added change to typecast
value
2. Structurally dead code: Removed dead code
3. Resource leak: Added a free for allocated memory, in case of failure
4. too_few_printf_args: Corrected print statement to pass arguments
5. Fixed nesting levels
6. Fixed unused value warnings
7. Illegal memory access fix

components/bt/common/osi/pkt_queue.c

@@ -25,6 +25,7 @@ struct pkt_queue *pkt_queue_create(void)
     }
     if (osi_mutex_new(&queue->lock) != 0) {
         osi_free(queue);
+        return NULL;
     }
     struct pkt_queue_header *p = &queue->header;
     STAILQ_INIT(p);