increase log level for this failed setsockopt call. EINVAL is a normal error on Solaris when we do this on an already resetted connection.

(This used to be commit 42bc4ff7fd)

source3/lib/util_sock.c

@@ -837,7 +837,10 @@ void set_socket_options(int fd, const char *options)
 		}
 
 		if (ret != 0) {
-			DEBUG(0,("Failed to set socket option %s (Error %s)\n",
+			/* be aware that some systems like Solaris return
+			 * EINVAL to a setsockopt() call when the client
+			 * sent a RST previously - no need to worry */
+			DEBUG(2,("Failed to set socket option %s (Error %s)\n",
 				tok, strerror(errno) ));
 		}
 	}