[PATCH] fix crash with ngx_setproctitle

[Markus Linnala]

Test ngx_init_setproctitle return value to prevent crash at ngx_setproctitle.

Added modifications not to break environments without setproctitle.
Fix from Maxim Dounin.

diff -r 79553cb77747 -r 69fdb8f8270e src/os/unix/ngx_posix_init.c
--- a/src/os/unix/ngx_posix_init.c	Fri Aug 15 14:09:29 2014 +0400
+++ b/src/os/unix/ngx_posix_init.c	Sun Aug 17 21:01:53 2014 +0300
@@ -40,7 +40,9 @@
     }
 #endif
 
-    ngx_init_setproctitle(log);
+    if (ngx_init_setproctitle(log) != NGX_OK) {
+        return NGX_ERROR;
+    }
 
     ngx_pagesize = getpagesize();
     ngx_cacheline_size = NGX_CPU_CACHE_LINE;
diff -r 79553cb77747 -r 69fdb8f8270e src/os/unix/ngx_setproctitle.h
--- a/src/os/unix/ngx_setproctitle.h	Fri Aug 15 14:09:29 2014 +0400
+++ b/src/os/unix/ngx_setproctitle.h	Sun Aug 17 21:01:53 2014 +0300
@@ -13,7 +13,7 @@
 
 /* FreeBSD, NetBSD, OpenBSD */
 
-#define ngx_init_setproctitle(log)
+#define ngx_init_setproctitle(log) NGX_OK
 #define ngx_setproctitle(title)    setproctitle("%s", title)
 
 
@@ -39,7 +39,7 @@
 
 #else
 
-#define ngx_init_setproctitle(log)
+#define ngx_init_setproctitle(log) NGX_OK
 #define ngx_setproctitle(title)
 
 #endif /* OSes */