Add the missing int, to avoid a compilation failure in strict C99 mode.

Submitted upstream: <https://bugs.kde.org/show_bug.cgi?id=462007>

diff --git a/none/tests/faultstatus.c b/none/tests/faultstatus.c
index 458ea8264593af4e..92a8350ab2285092 100644
--- a/none/tests/faultstatus.c
+++ b/none/tests/faultstatus.c
@@ -190,7 +190,7 @@ int main()
 	return 0;
 }
 
-static volatile s_zero;
+static volatile int s_zero;
 
 static int zero()
 {