Fix linux compile with latest SDK

This needs some cleanup still for non-TF2

extension/sdk/smsdk_ext.cpp

@@ -461,5 +461,15 @@ void operator delete[](void * ptr)
 {
 	free(ptr);
 }
+
+void operator delete(void *ptr, size_t size) 
+{
+	free(ptr);
+}
+
+void operator delete[](void * ptr, size_t size)
+{
+	free(ptr);
+}
 #endif