[nginx] Win32: disabled C4306 warnings with MSVC.

[Sergey Kandaurov]

details:   https://hg.nginx.org/nginx/rev/b347fe705ff2
branches:  
changeset: 8067:b347fe705ff2
user:      Maxim Dounin <mdounin at mdounin.ru>
date:      Wed Sep 07 00:47:07 2022 +0300
description:
Win32: disabled C4306 warnings with MSVC.

Multiple C4306 warnings (conversion from 'type1' to 'type2' of greater size)
appear during 64-bit compilation with MSVC 2010 (and older) due to extensively
used constructs like "(void *) -1", so they were disabled.

In newer MSVC versions C4306 warnings were replaced with C4312 ones, and
these are not generated for such trivial type casts.

diffstat:

 src/os/win32/ngx_win32_config.h |  3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diffs (13 lines):

diff -r d1aa8cc3e387 -r b347fe705ff2 src/os/win32/ngx_win32_config.h
--- a/src/os/win32/ngx_win32_config.h	Wed Sep 07 00:47:02 2022 +0300
+++ b/src/os/win32/ngx_win32_config.h	Wed Sep 07 00:47:07 2022 +0300
@@ -104,6 +104,9 @@ typedef long  time_t;
 /* array is too small to include a terminating null character */
 #pragma warning(disable:4295)
 
+/* conversion from 'type1' to 'type2' of greater size */
+#pragma warning(disable:4306)
+
 #endif