[AFL][libFuzzer] Fix read past end of fuzzing target input buffer.

testing/libfuzzer/fuzzers/string_tokenizer_fuzzer.cc

Index: testing/libfuzzer/fuzzers/string_tokenizer_fuzzer.cc
diff --git a/testing/libfuzzer/fuzzers/string_tokenizer_fuzzer.cc b/testing/libfuzzer/fuzzers/string_tokenizer_fuzzer.cc
index 44852b3217021d4da043a348fc520fc17ebd8aef..c41b8aecc4f2a0990030c00c5f77536442ee0ffd 100644
--- a/testing/libfuzzer/fuzzers/string_tokenizer_fuzzer.cc
+++ b/testing/libfuzzer/fuzzers/string_tokenizer_fuzzer.cc
@@ -26,7 +26,7 @@ extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
   // won't be called.
   size_t pattern_size = data[0];
 
-  if (pattern_size > size) {
+  if (pattern_size > size - 1) {
     return 0;
   }