Fix pasto in StringRef::count(char)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79356 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/unittests/ADT/StringRefTest.cpp b/unittests/ADT/StringRefTest.cpp
index ef89e9f..320633a 100644
--- a/unittests/ADT/StringRefTest.cpp
+++ b/unittests/ADT/StringRefTest.cpp
@@ -96,6 +96,7 @@
   EXPECT_TRUE(Str.find("zz") == StringRef::npos);
 
   EXPECT_TRUE(Str.count('l') == 2);
+  EXPECT_TRUE(Str.count('o') == 1);
   EXPECT_TRUE(Str.count('z') == 0);
   EXPECT_TRUE(Str.count("helloworld") == 0);
   EXPECT_TRUE(Str.count("hello") == 1);