Style: NGX_PTR_SIZE replaced with sizeof(void *).

The NGX_PTR_SIZE macro is only needed in preprocessor directives where
it's not possible to use sizeof().

src/core/ngx_string.c

diff --git a/src/core/ngx_string.c b/src/core/ngx_string.c
index d2a8d01..cf665a4 100644
--- a/src/core/ngx_string.c
+++ b/src/core/ngx_string.c
@@ -410,7 +410,7 @@
                 hex = 2;
                 sign = 0;
                 zero = '0';
-                width = NGX_PTR_SIZE * 2;
+                width = 2 * sizeof(void *);
                 break;
 
             case 'c':

src/http/ngx_http_core_module.c

diff --git a/src/http/ngx_http_core_module.c b/src/http/ngx_http_core_module.c
index acb9c90..4b8dd4c 100644
--- a/src/http/ngx_http_core_module.c
+++ b/src/http/ngx_http_core_module.c
@@ -3503,7 +3503,7 @@
     /* TODO: it does not merge, it inits only */
 
     ngx_conf_merge_size_value(conf->connection_pool_size,
-                              prev->connection_pool_size, NGX_PTR_SIZE * 64);
+                              prev->connection_pool_size, 64 * sizeof(void *));
     ngx_conf_merge_size_value(conf->request_pool_size,
                               prev->request_pool_size, 4096);
     ngx_conf_merge_msec_value(conf->client_header_timeout,