error.c: check if EWOULDBLOCK is defined

* error.c (set_syserr): EWOULDBLOCK may not be defined, check if defined first. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@48049 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2014-10-20 06:58:16 +00:00 · 2014-10-20 06:58:16 +00:00 · 8d9e1f9dad
commit 8d9e1f9dad
parent bd2d094aab
1 changed files with 10 additions and 10 deletions
--- a/error.c
+++ b/error.c
@ -1293,7 +1293,7 @@ set_syserr(int n, const char *name)
 	  case EAGAIN:
 	    rb_eEAGAIN = error;

-#if EAGAIN != EWOULDBLOCK
+#if defined(EWOULDBLOCK) && EWOULDBLOCK != EAGAIN
 	    break;
 	  case EWOULDBLOCK:
 #endif