Update comment.

llvm-svn: 254972
diff --git a/clang/lib/Driver/Tools.cpp b/clang/lib/Driver/Tools.cpp
index 7025314..90d81b9 100644
--- a/clang/lib/Driver/Tools.cpp
+++ b/clang/lib/Driver/Tools.cpp
@@ -6639,11 +6639,11 @@
     SourceAction = SourceAction->getInputs()[0];
   }
 
-  // If -fno_integrated_as is used add -Q to the darwin assember driver to make
+  // If -fno-integrated-as is used add -Q to the darwin assember driver to make
   // sure it runs its system assembler not clang's integrated assembler.
   // Applicable to darwin11+ and Xcode 4+.  darwin<10 lacked integrated-as.
   // FIXME: at run-time detect assembler capabilities or rely on version
-  // information forwarded by -target-assembler-version (future)
+  // information forwarded by -target-assembler-version.
   if (Args.hasArg(options::OPT_fno_integrated_as)) {
     const llvm::Triple &T(getToolChain().getTriple());
     if (!(T.isMacOSX() && T.isMacOSXVersionLT(10, 7)))