[COMMITTED PATCH] NPTL: Use unsigned type for setxid_futex.

[Roland McGrath]

Verified on x86_64-linux-gnu that no generated code changes at all.
A good follow-up cleanup here would be to replace the four magic values
used throughout the code (0, 1, -1, -2) with an enum.


Thanks,
Roland


	* nptl/descr.h (struct pthread): Change type of field setxid_futex
	to 'unsigned int'.

diff --git a/nptl/descr.h b/nptl/descr.h
index 5bd1282..a502048 100644
--- a/nptl/descr.h
+++ b/nptl/descr.h
@@ -328,7 +328,7 @@ struct pthread
   int lock;
 
   /* Lock for synchronizing setxid calls.  */
-  int setxid_futex;
+  unsigned int setxid_futex;
 
 #if HP_TIMING_AVAIL
   /* Offset of the CPU clock at start thread start time.  */