Update error message; detach-keeps-stopped is also not on FreeBSD

llvm-svn: 185549
diff --git a/lldb/source/Plugins/Process/POSIX/ProcessPOSIX.cpp b/lldb/source/Plugins/Process/POSIX/ProcessPOSIX.cpp
index 824d797..4e8ed2f 100644
--- a/lldb/source/Plugins/Process/POSIX/ProcessPOSIX.cpp
+++ b/lldb/source/Plugins/Process/POSIX/ProcessPOSIX.cpp
@@ -313,9 +313,9 @@
     Error error;
     if (keep_stopped)
     {
-        // FIXME: If you want to implement keep_stopped on Linux,
+        // FIXME: If you want to implement keep_stopped,
         // this would be the place to do it.
-        error.SetErrorString("Detaching with keep_stopped true is not currently supported on Linux.");
+        error.SetErrorString("Detaching with keep_stopped true is not currently supported on this platform.");
         return error;
     }