[libFuzzer] Un-reverting change in tests after fixing the failure on Linux.

Differential Revision: https://reviews.llvm.org/D36242

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@309982 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Fuzzer/test/InitializeTest.cpp

@@ -20,7 +20,7 @@ extern "C" int LLVMFuzzerInitialize(int *argc, char ***argv) {
 
 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
   if (Size == strlen(argv0) &&
-      !strncmp(reinterpret_cast<const char *>(Data), argv0, Size)) {
+      !memmem(Data, Size, argv0, Size)) {
     fprintf(stderr, "BINGO %s\n", argv0);
     exit(1);
   }