text: NULL-terminate SI mask names

The list should have a NULL sentry. Add one.

testcase: 'interpret KP_Delete+AnyOfOrNaneo(ll)'

Signed-off-by: Daniel Stone <daniels@collabora.com>

src/text.c

@@ -204,6 +204,7 @@ const LookupEntry symInterpretMatchMaskNames[] = {
     { "AnyOf", MATCH_ANY },
     { "AllOf", MATCH_ALL },
     { "Exactly", MATCH_EXACTLY },
+    { NULL, 0 },
 };
 
 const char *