[LyX/master] Probably fix #10850 compiler warnings.

[Richard Heck]

commit 27eb415d250ea963c07e22da6c28c5458a36a749
Author: Richard Heck <rgh...@lyx.org>
Date:   Fri Dec 15 23:25:51 2017 -0500

    Probably fix #10850 compiler warnings.
---
 src/support/FileName.cpp |    8 +++++++-
 1 files changed, 7 insertions(+), 1 deletions(-)

diff --git a/src/support/FileName.cpp b/src/support/FileName.cpp
index 189c564..f9a6f7e 100644
--- a/src/support/FileName.cpp
+++ b/src/support/FileName.cpp
@@ -283,6 +283,9 @@ bool FileName::changePermission(unsigned long int mode) 
const
                        << mode << ".");
                return false;
        }
+#else
+       // squash warning
+       (void) mode;
 #endif
        return true;
 }
@@ -683,7 +686,9 @@ static int mymkdir(char const * pathname, unsigned long int 
mode)
 #else
 #   error "Don't know how to create a directory on this system."
 #endif
-
+       // squash warnings
+       (void) mode;
+       (void) pathname;
 }
 
 
@@ -692,6 +697,7 @@ bool FileName::createDirectory(int permission) const
        LASSERT(!empty(), return false);
 #ifdef Q_OS_WIN32
        // FIXME: "Permissions of created directories are ignored on this 
system."
+       (void) permission;
        return createPath();
 #else
        return mymkdir(toFilesystemEncoding().c_str(), permission) == 0;