[PATCH] uml: clear errno in CATCH_EINTR

To avoid silly messages coming out during debugging or when things break,
after that we've read in CATCH_EINTR that errno == EINTR, clear it, so that
it's 0 in next iteration.
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade_spam@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

arch/um/include/user_util.h

@@ -8,7 +8,7 @@
 
 #include "sysdep/ptrace.h"
 
-#define CATCH_EINTR(expr) while (((expr) < 0) && (errno == EINTR))
+#define CATCH_EINTR(expr) while ((errno = 0, ((expr) < 0)) && (errno == EINTR))
 
 extern int mode_tt;