ubsan: Remove 1-element array usage in debug reporting

The "type_name" character array was still marked as a 1-element array.
While we don't validate strings used in format arguments yet, let's fix
this before it causes trouble some future day.

Link: https://lore.kernel.org/r/[email protected]
Reviewed-by: Gustavo A. R. Silva <[email protected]>
Signed-off-by: Kees Cook <[email protected]>

Author: kees

lib/ubsan.h

@@ -43,7 +43,7 @@ enum {
 struct type_descriptor {
 	u16 type_kind;
 	u16 type_info;
-	char type_name[1];
+	char type_name[];
 };
 
 struct source_location {