Win32: MinGW GCC compatibility.
Several warnings silenced, notably (ngx_socket_t) -1 is now checked
on socket operations instead of -1, as ngx_socket_t is unsigned on win32
and gcc complains on comparison.
With this patch, it's now possible to compile nginx using mingw gcc,
with options we normally compile on win32.
diff --git a/src/core/ngx_resolver.c b/src/core/ngx_resolver.c
index d59d0c4..d94477a 100644
--- a/src/core/ngx_resolver.c
+++ b/src/core/ngx_resolver.c
@@ -2221,7 +2221,7 @@
ngx_log_debug1(NGX_LOG_DEBUG_EVENT, &uc->log, 0, "UDP socket %d", s);
- if (s == -1) {
+ if (s == (ngx_socket_t) -1) {
ngx_log_error(NGX_LOG_ALERT, &uc->log, ngx_socket_errno,
ngx_socket_n " failed");
return NGX_ERROR;
