fix MAX_REQUEST_SIZE bug

Author: codeplea

chap07/web_server.c

@@ -311,6 +311,7 @@ int main() {
 
                 if (MAX_REQUEST_SIZE == client->received) {
                     send_400(client);
+                    client = next;
                     continue;
                 }
 

chap07/web_server2.c

@@ -317,6 +317,7 @@ int main() {
 
                 if (MAX_REQUEST_SIZE == client->received) {
                     send_400(&client_list, client);
+                    client = next;
                     continue;
                 }
 

chap10/https_server.c

@@ -351,6 +351,7 @@ int main() {
 
                 if (MAX_REQUEST_SIZE == client->received) {
                     send_400(client);
+                    client = next;
                     continue;
                 }