Added include for <cassert>

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@317722 91177308-0d34-0410-b5e6-96231b3b80d8

fuzzing/fuzzing.cpp

@@ -28,6 +28,7 @@
 #include <algorithm>
 #include <functional>
 #include <regex>
+#include <cassert>
 
 #include <iostream>