i18n: Fix in Qt4/Help

Spotted-by: Cristian Secară
(cherry picked from commit c234419b)
Signed-off-by: Christophe Mutricy <xtophe@videolan.org>

modules/gui/qt4/dialogs/help.cpp

@@ -122,7 +122,7 @@ AboutDialog::AboutDialog( QWidget *parent, intf_thread_t *_p_intf)
             + qtr( "This version of VLC was compiled by:\n " )
             + qfu( VLC_CompileBy() )+ "@" + qfu( VLC_CompileHost() ) + "."
             + qfu( VLC_CompileDomain() ) + ".\n"
-            + "Compiler: " + qfu( VLC_Compiler() ) + ".\n"
+            + qtr( "Compiler: " ) + qfu( VLC_Compiler() ) + ".\n"
             + qtr( "Based on Git commit: " ) + qfu( VLC_Changeset() ) + ".\n"
             + qtr( "You are using the Qt4 Interface.\n\n" )
             + qtr( "Copyright (C) " ) + COPYRIGHT_YEARS