ia64: Fix NaT consumption fault handler to not oops if fault was

	triggered in a code section with an exception handler.

arch/ia64/kernel/traps.c

@@ -498,7 +498,8 @@ ia64_fault (unsigned long vector, unsigned long isr, unsigned long ifa,
 			siginfo.si_isr = isr;
 			force_sig_info(sig, &siginfo, current);
 			return;
-		}
+		} else if (done_with_exception(regs))
+			return;
 		sprintf(buf, "NaT consumption");
 		break;