Don't return int from set_personality(), no one checks it.

* defs.h (set_personality): Change return type to void.
* syscall.c (set_personality): Change return type to void.

Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
diff --git a/syscall.c b/syscall.c
index d6d4697..8a77ec2 100644
--- a/syscall.c
+++ b/syscall.c
@@ -183,9 +183,9 @@
 #if SUPPORTED_PERSONALITIES > 2
 	PERSONALITY2_WORDSIZE,
 #endif
-};;
+};
 
-int
+void
 set_personality(int personality)
 {
 	switch (personality) {
@@ -213,7 +213,7 @@
 		nsignals = nsignals1;
 		qual_flags = qual_flags1;
 		break;
-#endif /* SUPPORTED_PERSONALITIES >= 2 */
+#endif
 
 #if SUPPORTED_PERSONALITIES >= 3
 	case 2:
@@ -227,14 +227,10 @@
 		nsignals = nsignals2;
 		qual_flags = qual_flags2;
 		break;
-#endif /* SUPPORTED_PERSONALITIES >= 3 */
-
-	default:
-		return -1;
+#endif
 	}
 
 	current_personality = personality;
-	return 0;
 }