[libFuzzer] [NFC] Fix grammar error with "it's"

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@372937 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/fuzzer/FuzzerLoop.cpp b/lib/fuzzer/FuzzerLoop.cpp
index 9c26673..7150a11 100644
--- a/lib/fuzzer/FuzzerLoop.cpp
+++ b/lib/fuzzer/FuzzerLoop.cpp
@@ -513,7 +513,7 @@
 }
 
 void Fuzzer::CrashOnOverwrittenData() {
-  Printf("==%d== ERROR: libFuzzer: fuzz target overwrites it's const input\n",
+  Printf("==%d== ERROR: libFuzzer: fuzz target overwrites its const input\n",
          GetPid());
   DumpCurrentUnit("crash-");
   Printf("SUMMARY: libFuzzer: out-of-memory\n");
diff --git a/test/fuzzer/overwrite-input.test b/test/fuzzer/overwrite-input.test
index e5ddd62..eef1b18 100644
--- a/test/fuzzer/overwrite-input.test
+++ b/test/fuzzer/overwrite-input.test
@@ -1,3 +1,3 @@
 RUN: %cpp_compiler %S/OverwriteInputTest.cpp -o %t-OverwriteInputTest
 RUN: not %run %t-OverwriteInputTest 2>&1 | FileCheck %s
-CHECK: ERROR: libFuzzer: fuzz target overwrites it's const input
+CHECK: ERROR: libFuzzer: fuzz target overwrites its const input