feature: applied the init_cycle_pool_release patch to nginx 1.13.6+ cores to make it valgrind or asan clean.

patches/nginx-1.13.6-init_cycle_pool_release.patch

@@ -0,0 +1,44 @@
+diff -ur nginx-1.13.6/src/core/nginx.c nginx-1.13.6-patched/src/core/nginx.c
+--- nginx-1.13.6/src/core/nginx.c	2017-12-16 12:04:13.923270925 -0800
++++ nginx-1.13.6-patched/src/core/nginx.c	2017-12-16 12:03:55.013934545 -0800
+@@ -198,6 +198,7 @@
+ static u_char      *ngx_conf_file;
+ static u_char      *ngx_conf_params;
+ static char        *ngx_signal;
++ngx_pool_t         *saved_init_cycle_pool = NULL;
+ 
+ 
+ static char **ngx_os_environ;
+@@ -265,6 +266,8 @@
+         return 1;
+     }
+ 
++    saved_init_cycle_pool = init_cycle.pool;
++
+     if (ngx_save_argv(&init_cycle, argc, argv) != NGX_OK) {
+         return 1;
+     }
+diff -ur nginx-1.13.6/src/core/ngx_core.h nginx-1.13.6-patched/src/core/ngx_core.h
+--- nginx-1.13.6/src/core/ngx_core.h	2017-10-10 08:22:51.000000000 -0700
++++ nginx-1.13.6-patched/src/core/ngx_core.h	2017-12-16 12:03:55.013934545 -0800
+@@ -108,4 +108,6 @@
+ #define NGX_DISABLE_SYMLINKS_NOTOWNER   2
+ #endif
+ 
++extern ngx_pool_t        *saved_init_cycle_pool;
++
+ #endif /* _NGX_CORE_H_INCLUDED_ */
+diff -ur nginx-1.13.6/src/os/unix/ngx_process_cycle.c nginx-1.13.6-patched/src/os/unix/ngx_process_cycle.c
+--- nginx-1.13.6/src/os/unix/ngx_process_cycle.c	2017-12-16 12:04:13.901271675 -0800
++++ nginx-1.13.6-patched/src/os/unix/ngx_process_cycle.c	2017-12-16 12:03:55.027933951 -0800
+@@ -785,6 +785,10 @@
+ 
+     ngx_destroy_pool(cycle->pool);
+ 
++    if (saved_init_cycle_pool != NULL && saved_init_cycle_pool != cycle->pool) {
++        ngx_destroy_pool(saved_init_cycle_pool);
++    }
++
+     exit(0);
+ }
+ 

util/mirror-tarballs

@@ -379,6 +379,12 @@ if [ "$main_ver" = "1.9.7" ]; then
     echo
 fi
 
+if [ "$main_ver" = "1.13.6" ]; then
+    echo "$info_txt applying the init_cycle_pool_release patch for nginx"
+    patch -p1 < $root/patches/nginx-$main_ver-init_cycle_pool_release.patch || exit 1
+    echo
+fi
+
 rm -f *.patch || exit 1
 
 echo "$info_txt applying the always_enable_cc_feature_tests patch to nginx"