Win32: fixed init_process without master process (ticket #453).

Init process callbacks are called by ngx_worker_thread(), there is no
need to call them in ngx_single_process_cycle().

src/os/win32/ngx_process_cycle.c

diff --git a/src/os/win32/ngx_process_cycle.c b/src/os/win32/ngx_process_cycle.c
index 949ea85..b5a1022 100644
--- a/src/os/win32/ngx_process_cycle.c
+++ b/src/os/win32/ngx_process_cycle.c
@@ -1022,18 +1022,8 @@
 void
 ngx_single_process_cycle(ngx_cycle_t *cycle)
 {
-    ngx_int_t  i;
     ngx_tid_t  tid;
 
-    for (i = 0; ngx_modules[i]; i++) {
-        if (ngx_modules[i]->init_process) {
-            if (ngx_modules[i]->init_process(cycle) == NGX_ERROR) {
-                /* fatal */
-                exit(2);
-            }
-        }
-    }
-
     ngx_process_init(cycle);
 
     ngx_console_init(cycle);