--- ngx_inet.c.orig	2019-12-12 12:03:25.414107400 -0800
+++ ngx_inet.c	2019-12-12 12:13:22.386814300 -0800
@@ -751,6 +751,7 @@
 
     saun = ngx_pcalloc(pool, sizeof(struct sockaddr_un));
     if (saun == NULL) {
+	ngx_pfree(u->addrs);	/* release memory from u->addrs	*/
         return NGX_ERROR;
     }
 
@@ -913,6 +914,7 @@
 
         sin = ngx_pcalloc(pool, sizeof(struct sockaddr_in));
         if (sin == NULL) {
+	    ngx_pfree(u->addrs);    /* release memory from u->addrs */
             return NGX_ERROR;
         }
 
@@ -1070,6 +1072,7 @@
 
     sin6 = ngx_pcalloc(pool, sizeof(struct sockaddr_in6));
     if (sin6 == NULL) {
+	ngx_pfree(u->addrs);	/* release memory from u->addrs	*/
         return NGX_ERROR;
     }
 
@@ -1296,6 +1299,7 @@
 
             sin = ngx_pcalloc(pool, sizeof(struct sockaddr_in));
             if (sin == NULL) {
+		ngx_pfree(u->addrs);	/* release memory allocated to u->addrs	*/
                 return NGX_ERROR;
             }
 
@@ -1310,6 +1314,8 @@
 
             p = ngx_pnalloc(pool, len);
             if (p == NULL) {
+		ngx_pfree(sin);	/* release memory allocated to sin */
+		ngx_pfree(u->addrs); /* release memory allocated to u->addrs */
                 return NGX_ERROR;
             }
 
@@ -1331,6 +1337,7 @@
 
         sin = ngx_pcalloc(pool, sizeof(struct sockaddr_in));
         if (sin == NULL) {
+	    ngx_pfree(u->addrs);    /*	release memory assigned to u->addrs */
             return NGX_ERROR;
         }
 
@@ -1345,6 +1352,8 @@
 
         p = ngx_pnalloc(pool, u->host.len + sizeof(":65535") - 1);
         if (p == NULL) {
+	    ngx_pfree(sin); /*	release memory assigned to sin */
+	    ngx_pfree(u->addrs);    /*	release memory assigned to u->addrs */
             return NGX_ERROR;
         }