Fix UTF8 chars to ASCII.

llvm-svn: 230479
diff --git a/llvm/lib/MC/ELFObjectWriter.cpp b/llvm/lib/MC/ELFObjectWriter.cpp
index b4948e6..4819905 100644
--- a/llvm/lib/MC/ELFObjectWriter.cpp
+++ b/llvm/lib/MC/ELFObjectWriter.cpp
@@ -1041,7 +1041,7 @@
     // in defined ones.
     //
     // FIXME: All name handling should be done before we get to the writer,
-    // including dealing with GNU-style version suffixes.  Fixing this isn’t
+    // including dealing with GNU-style version suffixes.  Fixing this isn't
     // trivial.
     //
     // We thus have to be careful to not perform the symbol version replacement