Fix typo.

llvm-svn: 270005
diff --git a/compiler-rt/lib/profile/InstrProfiling.h b/compiler-rt/lib/profile/InstrProfiling.h
index d474b46..7bc2061 100644
--- a/compiler-rt/lib/profile/InstrProfiling.h
+++ b/compiler-rt/lib/profile/InstrProfiling.h
@@ -155,7 +155,7 @@
                                       const __llvm_profile_data *End);
 
 /*!
- * This variable is defined in InstrProfilingRuntime.c as a hidden
+ * This variable is defined in InstrProfilingRuntime.cc as a hidden
  * symbol. Its main purpose is to enable profile runtime user to
  * bypass runtime initialization code -- if the client code explicitly
  * define this variable, then InstProfileRuntime.o won't be linked in.