Reintroduce suppression

Reviewed-by: mcimadamore

Author: minborg

src/java.base/share/classes/jdk/internal/foreign/abi/x64/sysv/TypeClass.java

@@ -197,7 +197,7 @@ private static List<ArgumentClassImpl>[] groupByEightBytes(GroupLayout group) {
         } catch (ArithmeticException e) {
             throw new IllegalArgumentException("GroupLayout is too large: " + group, e);
         }
-        @SuppressWarnings({"unchecked"})
+        @SuppressWarnings({"unchecked", "rawtypes"}) // rawtypes warnings need to be suppressed
         List<ArgumentClassImpl>[] groups = new List[nEightbytes];
         for (MemoryLayout l : group.memberLayouts()) {
             groupByEightBytes(l, offset, groups);