Whoops, unbreak syscall number checking.



git-svn-id: svn://svn.valgrind.org/valgrind/trunk@3098 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/coregrind/core.h b/coregrind/core.h
index eae7980..4921efd 100644
--- a/coregrind/core.h
+++ b/coregrind/core.h
@@ -1831,7 +1831,7 @@
 #define SYSCALL_RET(regs)  ((regs).vex.PLATFORM_SYSCALL_RET)
 
 // Offsets for the shadow state
-#define O_SYSCALL_NUM   (offsetof(VexGuestArchState, PLATFORM_SYSCALL_ARG6))
+#define O_SYSCALL_NUM   (offsetof(VexGuestArchState, PLATFORM_SYSCALL_NUM))
 #define O_SYSCALL_ARG1  (offsetof(VexGuestArchState, PLATFORM_SYSCALL_ARG1))
 #define O_SYSCALL_ARG2  (offsetof(VexGuestArchState, PLATFORM_SYSCALL_ARG2))
 #define O_SYSCALL_ARG3  (offsetof(VexGuestArchState, PLATFORM_SYSCALL_ARG3))