C#: Only consider calling GetHashCode on byte, sbyte, short, ushort and int as useless.

csharp/ql/src/Useless code/IntGetHashCode.ql

@@ -16,5 +16,12 @@ import semmle.code.csharp.frameworks.System
 from MethodCall mc, IntegralType t
 where
   mc.getTarget() instanceof GetHashCodeMethod and
-  t = mc.getQualifier().getType()
+  t = mc.getQualifier().getType() and
+  (
+    t instanceof ByteType or
+    t instanceof SByteType or
+    t instanceof ShortType or
+    t instanceof UShortType or
+    t instanceof IntType
+  )
 select mc, "Calling GetHashCode() on type " + t.toStringWithTypes() + " is redundant."