[PATCH] SSL: fixed $ssl_curves allocation error handling

[Sergey Kandaurov]

# HG changeset patch
# User Sergey Kandaurov <pluk...@nginx.com>
# Date 1706265240 -14400
#      Fri Jan 26 14:34:00 2024 +0400
# Node ID 2f70dd17c16461f833eafec2dcf9193557bfb176
# Parent  ee40e2b1d0833b46128a357fbc84c6e23be9be07
SSL: fixed $ssl_curves allocation error handling.

diff --git a/src/event/ngx_event_openssl.c b/src/event/ngx_event_openssl.c
--- a/src/event/ngx_event_openssl.c
+++ b/src/event/ngx_event_openssl.c
@@ -5187,6 +5187,9 @@ ngx_ssl_get_curves(ngx_connection_t *c, 
     }
 
     curves = ngx_palloc(pool, n * sizeof(int));
+    if (curves == NULL) {
+        return NGX_ERROR;
+    }
 
     n = SSL_get1_curves(c->ssl->connection, curves);
     len = 0;
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