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Fix bug #51507 (Keep uses of SYS_ARCH_PROTECT/UNPROTECT in alloc_socket nested)
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@ -461,6 +461,7 @@ alloc_socket(struct netconn *newconn, int accepted)
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if (!sockets[i].conn) {
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#if LWIP_NETCONN_FULLDUPLEX
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if (sockets[i].fd_used) {
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SYS_ARCH_UNPROTECT(lev);
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continue;
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}
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sockets[i].fd_used = 1;
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