Merge of r4785, r4795, r4811, r4812, r4816, r4822: coverity. *) Resolver: fixed possible memory leak in ngx_resolver_create(). *) Explicitly ignore returned value from unlink() in ngx_open_tempfile(). *) Explicitly ignore returned value from close() in ngx_event_core_init_conf(). *) Added three missing checks for NULL after ngx_array_push() calls. *) Crypt: fixed handling of corrupted SSHA entries in password file. *) Mark logically dead code with corresponding comment. Found by / prodded by Coverity.

--- a/src/os/unix/ngx_files.c
+++ b/src/os/unix/ngx_files.c
@@ -139,7 +139,7 @@ ngx_open_tempfile(u_char *name, ngx_uint
               access ? access : 0600);
 
     if (fd != -1 && !persistent) {
-        unlink((const char *) name);
+        (void) unlink((const char *) name);
     }
 
     return fd;