[LyX/master] Hint message when .lyx dir can not be created.

[Pavel Sanda]

commit a222a2eab681ff0dc8fa5adfe6c353bf38ab3e0f
Author: Pavel Sanda <sanda at lyx.org>
Date:   Tue Dec 8 09:53:38 2020 +0100

    Hint message when .lyx dir can not be created.
    
    Useful for scripts running without standard homedir environments,
    cf https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=816173
---
 src/LyX.cpp |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/src/LyX.cpp b/src/LyX.cpp
index 44361ba..a0035fb 100644
--- a/src/LyX.cpp
+++ b/src/LyX.cpp
@@ -1103,7 +1103,7 @@ bool LyX::queryUserLyXDir(bool explicit_userdir)
 
 	if (!sup.createDirectory(0755)) {
 		// Failed, so let's exit.
-		lyxerr << to_utf8(_("Failed to create directory. Exiting."))
+		lyxerr << to_utf8(_("Failed to create directory. Perhaps wrong -userdir option?\nExiting."))
 		       << endl;
 		earlyExit(EXIT_FAILURE);
 	}